diff --git a/.travis.yml b/.travis.yml
index 46d5158..592c12e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,13 +1,18 @@
 language: node_js
 node_js:
-  - "5"
-  - "node"
+  - "6"
+cache:
+  directories:
+    - default/node_modules
+    - default/bower_components
 before_install:
   - cd default
   - npm install -g grunt-cli
   - npm install -g bower
+  - sudo apt-get install libgif-dev #libcairo2-dev libjpeg8-dev libpango1.0-dev build-essential g++ #ubuntu canvas pre-reqs
+  # brew install pkg-config cairo libpng jpeg giflib #macos canvas pre-reqs
 install:
   - npm install
   - bower install
 before_script:
-  - grunt build
+  - grunt build
\ No newline at end of file
diff --git a/default/failures/Header_0.fail.png b/default/failures/Header_0.fail.png
new file mode 100644
index 0000000..20bc01a
Binary files /dev/null and b/default/failures/Header_0.fail.png differ
diff --git a/default/package-lock.json b/default/package-lock.json
index 75b7b50..40317d3 100644
--- a/default/package-lock.json
+++ b/default/package-lock.json
@@ -7,8 +7,7 @@
     "abbrev": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/abbrev/-/abbrev-1.1.0.tgz",
-      "integrity": "sha1-0FVMIlZjbi9W58LlrRg/hZQo2B8=",
-      "dev": true
+      "integrity": "sha1-0FVMIlZjbi9W58LlrRg/hZQo2B8="
     },
     "ajv": {
       "version": "4.11.8",
@@ -37,29 +36,15 @@
       "integrity": "sha1-SlKCrBZHKek2Gbz9OtFR+BfOkfU=",
       "dev": true
     },
-    "ansi-regex": {
-      "version": "0.2.1",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-0.2.1.tgz",
-      "integrity": "sha1-DY6UaWej2BQ/k+JOKYUl/BsiNfk=",
-      "dev": true
-    },
-    "ansi-styles": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-1.1.0.tgz",
-      "integrity": "sha1-6uy/Zs1waIJ2Cy9GkVgrj1XXp94=",
-      "dev": true
-    },
     "aproba": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/aproba/-/aproba-1.1.2.tgz",
-      "integrity": "sha512-ZpYajIfO0j2cOFTO955KUMIKNmj6zhX8kVztMAxFsDaMwz+9Z9SV0uou2pC9HJqcfpffOsjnbrDMvkNy+9RXPw==",
-      "dev": true
+      "integrity": "sha1-RcZikJTeTpb2k+9+q3SuB5wkD8E="
     },
     "are-we-there-yet": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/are-we-there-yet/-/are-we-there-yet-1.1.4.tgz",
       "integrity": "sha1-u13KOCu5TwXhUZQ3PRb9O6HKEQ0=",
-      "dev": true,
       "requires": {
         "delegates": "1.0.0",
         "readable-stream": "2.3.3"
@@ -86,7 +71,7 @@
     "arr-flatten": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/arr-flatten/-/arr-flatten-1.1.0.tgz",
-      "integrity": "sha512-L3hKV5R/p5o81R7O02IGnwpDmkp6E982XhtbuwSe3O4qOtMMMtodicASA1Cny2U+aCXcNpml+m4dPsvsJ3jatg==",
+      "integrity": "sha1-NgSLv/TntH4TZkQxbJlmnqWukfE=",
       "dev": true
     },
     "array-find-index": {
@@ -146,8 +131,7 @@
     "balanced-match": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.0.tgz",
-      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
-      "dev": true
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c="
     },
     "bcrypt-pbkdf": {
       "version": "1.0.1",
@@ -159,17 +143,10 @@
         "tweetnacl": "0.14.5"
       }
     },
-    "bless": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/bless/-/bless-3.0.3.tgz",
-      "integrity": "sha1-Zec2NiyRsAghgJ70vIVnudl26qY=",
-      "dev": true
-    },
     "block-stream": {
       "version": "0.0.9",
       "resolved": "https://registry.npmjs.org/block-stream/-/block-stream-0.0.9.tgz",
       "integrity": "sha1-E+v+d4oDIFz+A3UUgeu0szAMEmo=",
-      "dev": true,
       "requires": {
         "inherits": "2.0.3"
       }
@@ -219,7 +196,6 @@
       "version": "1.1.8",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.8.tgz",
       "integrity": "sha1-wHshHHyVLsH479Uad+8NHTmQopI=",
-      "dev": true,
       "requires": {
         "balanced-match": "1.0.0",
         "concat-map": "0.0.1"
@@ -286,12 +262,28 @@
         "map-obj": "1.0.1"
       }
     },
+    "canvas": {
+      "version": "1.6.7",
+      "resolved": "https://registry.npmjs.org/canvas/-/canvas-1.6.7.tgz",
+      "integrity": "sha512-QLFCd9ca/Ww3s4vUf1KxmTX2QoYu8sZkSvXQ36RdbqNETDjn/I1H01ZEtWGGLcY0T7zNO6nsGoHX+0zrMy6JrQ==",
+      "requires": {
+        "nan": "2.7.0",
+        "parse-css-font": "2.0.2",
+        "units-css": "0.4.0"
+      }
+    },
     "caseless": {
       "version": "0.12.0",
       "resolved": "https://registry.npmjs.org/caseless/-/caseless-0.12.0.tgz",
       "integrity": "sha1-G2gcIf+EAzyCZUMJBolCDRhxUdw=",
       "dev": true
     },
+    "casperjs": {
+      "version": "1.1.4",
+      "resolved": "https://registry.npmjs.org/casperjs/-/casperjs-1.1.4.tgz",
+      "integrity": "sha1-6wH07YWsUgqPTZMrTap00+d7x0Y=",
+      "dev": true
+    },
     "center-align": {
       "version": "0.1.3",
       "resolved": "https://registry.npmjs.org/center-align/-/center-align-0.1.3.tgz",
@@ -302,19 +294,6 @@
         "lazy-cache": "1.0.4"
       }
     },
-    "chalk": {
-      "version": "0.5.1",
-      "resolved": "https://registry.npmjs.org/chalk/-/chalk-0.5.1.tgz",
-      "integrity": "sha1-Zjs6ZItotV0EaQ1JFnqoN4WPIXQ=",
-      "dev": true,
-      "requires": {
-        "ansi-styles": "1.1.0",
-        "escape-string-regexp": "1.0.5",
-        "has-ansi": "0.1.0",
-        "strip-ansi": "0.3.0",
-        "supports-color": "0.2.0"
-      }
-    },
     "clean-css": {
       "version": "3.4.28",
       "resolved": "https://registry.npmjs.org/clean-css/-/clean-css-3.4.28.tgz",
@@ -349,7 +328,7 @@
         "glob": {
           "version": "7.1.2",
           "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
-          "integrity": "sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==",
+          "integrity": "sha1-wZyd+aAocC1nhhI4SmVSQExjbRU=",
           "dev": true,
           "requires": {
             "fs.realpath": "1.0.0",
@@ -399,8 +378,7 @@
     "code-point-at": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
-      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
-      "dev": true
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
     },
     "coffee-script": {
       "version": "1.1.2",
@@ -435,8 +413,7 @@
     "concat-map": {
       "version": "0.0.1",
       "resolved": "https://registry.npmjs.org/concat-map/-/concat-map-0.0.1.tgz",
-      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=",
-      "dev": true
+      "integrity": "sha1-2Klr13/Wjfd5OnMDajug1UBdR3s="
     },
     "concat-stream": {
       "version": "1.6.0",
@@ -461,8 +438,7 @@
     "console-control-strings": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/console-control-strings/-/console-control-strings-1.1.0.tgz",
-      "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4=",
-      "dev": true
+      "integrity": "sha1-PXz0Rk22RG6mRL9LOVB/mFEAjo4="
     },
     "content-type": {
       "version": "1.0.2",
@@ -473,8 +449,7 @@
     "core-util-is": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/core-util-is/-/core-util-is-1.0.2.tgz",
-      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=",
-      "dev": true
+      "integrity": "sha1-tf1UIgqivFq1eqtxQMlAdUUDwac="
     },
     "cross-spawn": {
       "version": "3.0.1",
@@ -516,6 +491,44 @@
         "boom": "2.10.1"
       }
     },
+    "css-font-size-keywords": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/css-font-size-keywords/-/css-font-size-keywords-1.0.0.tgz",
+      "integrity": "sha1-hUh1rOmspqjS7g00WkSq6btttss="
+    },
+    "css-font-stretch-keywords": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/css-font-stretch-keywords/-/css-font-stretch-keywords-1.0.1.tgz",
+      "integrity": "sha1-UM7puboDH7XJUtRyMTnx4Qe1SxA="
+    },
+    "css-font-style-keywords": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/css-font-style-keywords/-/css-font-style-keywords-1.0.1.tgz",
+      "integrity": "sha1-XDUygT9jtKHelU0TzqhqtDM0CeQ="
+    },
+    "css-font-weight-keywords": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/css-font-weight-keywords/-/css-font-weight-keywords-1.0.0.tgz",
+      "integrity": "sha1-m8BGcayFvHJLV07106yWsNYE/Zc="
+    },
+    "css-global-keywords": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/css-global-keywords/-/css-global-keywords-1.0.1.tgz",
+      "integrity": "sha1-cqmupyeW0Bmx0qMlLeTlqqN+Smk="
+    },
+    "css-list-helpers": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/css-list-helpers/-/css-list-helpers-1.0.1.tgz",
+      "integrity": "sha1-//VxkiAtuDJAxBaG+RnkSacCT30=",
+      "requires": {
+        "tcomb": "2.7.0"
+      }
+    },
+    "css-system-font-keywords": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/css-system-font-keywords/-/css-system-font-keywords-1.0.0.tgz",
+      "integrity": "sha1-hcbwhquk6zLFcaMIav/ENLhII+0="
+    },
     "csslint": {
       "version": "0.10.0",
       "resolved": "https://registry.npmjs.org/csslint/-/csslint-0.10.0.tgz",
@@ -603,8 +616,7 @@
     "delegates": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/delegates/-/delegates-1.0.0.tgz",
-      "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o=",
-      "dev": true
+      "integrity": "sha1-hMbhWbgZBP3KWaDvRM2HDTElD5o="
     },
     "depd": {
       "version": "1.1.1",
@@ -702,6 +714,12 @@
         "is-arrayish": "0.2.1"
       }
     },
+    "es6-promise": {
+      "version": "4.0.5",
+      "resolved": "https://registry.npmjs.org/es6-promise/-/es6-promise-4.0.5.tgz",
+      "integrity": "sha1-eILzCt3lskDM+n99eMVIMwlRrkI=",
+      "dev": true
+    },
     "escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
@@ -759,6 +777,29 @@
         "is-extglob": "1.0.0"
       }
     },
+    "extract-zip": {
+      "version": "1.6.5",
+      "resolved": "https://registry.npmjs.org/extract-zip/-/extract-zip-1.6.5.tgz",
+      "integrity": "sha1-maBnNbbqIOqbcF13ms/8yHz/BEA=",
+      "dev": true,
+      "requires": {
+        "concat-stream": "1.6.0",
+        "debug": "2.2.0",
+        "mkdirp": "0.5.0",
+        "yauzl": "2.4.1"
+      },
+      "dependencies": {
+        "mkdirp": {
+          "version": "0.5.0",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.0.tgz",
+          "integrity": "sha1-HXMHam35hs2TROFecfzAWkyavxI=",
+          "dev": true,
+          "requires": {
+            "minimist": "0.0.8"
+          }
+        }
+      }
+    },
     "extsprintf": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/extsprintf/-/extsprintf-1.3.0.tgz",
@@ -780,6 +821,15 @@
         "websocket-driver": "0.6.5"
       }
     },
+    "fd-slicer": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/fd-slicer/-/fd-slicer-1.0.1.tgz",
+      "integrity": "sha1-i1vL2ewyfFBBv5qwI/1nUPEXfmU=",
+      "dev": true,
+      "requires": {
+        "pend": "1.2.0"
+      }
+    },
     "figures": {
       "version": "1.7.0",
       "resolved": "https://registry.npmjs.org/figures/-/figures-1.7.0.tgz",
@@ -875,60 +925,39 @@
         "mime-types": "2.1.16"
       }
     },
+    "fs-extra": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/fs-extra/-/fs-extra-1.0.0.tgz",
+      "integrity": "sha1-zTzl9+fLYUWIP8rjGR6Yd/hYeVA=",
+      "dev": true,
+      "requires": {
+        "graceful-fs": "4.1.11",
+        "jsonfile": "2.4.0",
+        "klaw": "1.3.1"
+      }
+    },
     "fs.realpath": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/fs.realpath/-/fs.realpath-1.0.0.tgz",
-      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8=",
-      "dev": true
+      "integrity": "sha1-FQStJSMVjKpA20onh8sBQRmU6k8="
     },
     "fstream": {
       "version": "1.0.11",
       "resolved": "https://registry.npmjs.org/fstream/-/fstream-1.0.11.tgz",
       "integrity": "sha1-XB+x8RdHcRTwYyoOtLcbPLD9MXE=",
-      "dev": true,
       "requires": {
         "graceful-fs": "4.1.11",
         "inherits": "2.0.3",
         "mkdirp": "0.5.1",
-        "rimraf": "2.6.1"
+        "rimraf": "2.6.2"
       },
       "dependencies": {
-        "glob": {
-          "version": "7.1.2",
-          "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
-          "integrity": "sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==",
-          "dev": true,
-          "requires": {
-            "fs.realpath": "1.0.0",
-            "inflight": "1.0.6",
-            "inherits": "2.0.3",
-            "minimatch": "3.0.4",
-            "once": "1.4.0",
-            "path-is-absolute": "1.0.1"
-          }
-        },
-        "graceful-fs": {
-          "version": "4.1.11",
-          "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.11.tgz",
-          "integrity": "sha1-Dovf5NHduIVNZOBOp8AOKgJuVlg=",
-          "dev": true
-        },
-        "minimatch": {
-          "version": "3.0.4",
-          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.0.4.tgz",
-          "integrity": "sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==",
-          "dev": true,
-          "requires": {
-            "brace-expansion": "1.1.8"
-          }
-        },
         "rimraf": {
-          "version": "2.6.1",
-          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.1.tgz",
-          "integrity": "sha1-wjOOxkPfeht/5cVPqG9XQopV8z0=",
-          "dev": true,
+          "version": "2.6.2",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.2.tgz",
+          "integrity": "sha512-lreewLK/BlghmxtfH36YYVg1i8IAce4TI7oao75I1g245+6BctqTVQiBP3YUJ9C6DQOXJmkYR9X9fCLtCOJc5w==",
           "requires": {
-            "glob": "7.1.2"
+            "glob": "7.0.6"
           }
         }
       }
@@ -937,7 +966,6 @@
       "version": "2.7.4",
       "resolved": "https://registry.npmjs.org/gauge/-/gauge-2.7.4.tgz",
       "integrity": "sha1-LANAXHU4w51+s3sxcCLjJfsBi/c=",
-      "dev": true,
       "requires": {
         "aproba": "1.1.2",
         "console-control-strings": "1.1.0",
@@ -952,14 +980,12 @@
         "ansi-regex": {
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-          "dev": true
+          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
         },
         "strip-ansi": {
           "version": "3.0.1",
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
-          "dev": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
@@ -1014,7 +1040,6 @@
       "version": "7.0.6",
       "resolved": "https://registry.npmjs.org/glob/-/glob-7.0.6.tgz",
       "integrity": "sha1-IRuvr0nlJbjNkyYNFKsTYVKz9Xo=",
-      "dev": true,
       "requires": {
         "fs.realpath": "1.0.0",
         "inflight": "1.0.6",
@@ -1057,7 +1082,7 @@
         "glob": {
           "version": "7.1.2",
           "resolved": "https://registry.npmjs.org/glob/-/glob-7.1.2.tgz",
-          "integrity": "sha512-MJTUg1kjuLeQCJ+ccE4Vpa6kKVXkPYJ2mOCQyUuKLcLQsdrMCpBPUi8qVE6+YuaJkozeA9NusTAw3hLr8Xe5EQ==",
+          "integrity": "sha1-wZyd+aAocC1nhhI4SmVSQExjbRU=",
           "dev": true,
           "requires": {
             "fs.realpath": "1.0.0",
@@ -1085,6 +1110,11 @@
         }
       }
     },
+    "graceful-fs": {
+      "version": "4.1.11",
+      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-4.1.11.tgz",
+      "integrity": "sha1-Dovf5NHduIVNZOBOp8AOKgJuVlg="
+    },
     "graceful-readlink": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/graceful-readlink/-/graceful-readlink-1.0.1.tgz",
@@ -1141,16 +1171,6 @@
         }
       }
     },
-    "grunt-bless": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/grunt-bless/-/grunt-bless-0.2.0.tgz",
-      "integrity": "sha1-ahikDaGCDsRcvP6p0VXuK0yAr+Y=",
-      "dev": true,
-      "requires": {
-        "bless": "3.0.3",
-        "chalk": "0.5.1"
-      }
-    },
     "grunt-contrib-concat": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/grunt-contrib-concat/-/grunt-contrib-concat-1.0.1.tgz",
@@ -1789,20 +1809,20 @@
         "har-schema": "1.0.5"
       }
     },
-    "has-ansi": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/has-ansi/-/has-ansi-0.1.0.tgz",
-      "integrity": "sha1-hPJlqujA5qiKEtcCKJS3VoiUxi4=",
-      "dev": true,
-      "requires": {
-        "ansi-regex": "0.2.1"
-      }
-    },
     "has-unicode": {
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       "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-2.3.3.tgz",
-      "integrity": "sha512-m+qzzcn7KUxEmd1gMbchF+Y2eIUbieUaxkWtptyHywrX0rE8QEYqPC07Vuy4Wm32/xE16NcdBctb8S0Xe/5IeQ==",
-      "dev": true,
+      "integrity": "sha1-No8lEtefnUb9/HE0mueHi7weuVw=",
       "requires": {
         "core-util-is": "1.0.2",
         "inherits": "2.0.3",
@@ -3201,8 +3298,16 @@
     "request": {
       "version": "2.9.203",
       "resolved": "https://registry.npmjs.org/request/-/request-2.9.203.tgz",
-      "integrity": "sha1-bBcRpUB/uUoRQhlWPkQUW8v0cjo=",
-      "dev": true
+      "integrity": "sha1-bBcRpUB/uUoRQhlWPkQUW8v0cjo="
+    },
+    "request-progress": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/request-progress/-/request-progress-2.0.1.tgz",
+      "integrity": "sha1-XTa7V5YcZzqlt4jbyBQf3yO0Tgg=",
+      "dev": true,
+      "requires": {
+        "throttleit": "1.0.0"
+      }
     },
     "require-directory": {
       "version": "2.1.1",
@@ -3216,6 +3321,11 @@
       "integrity": "sha1-l/cXtp1IeE9fUmpsWqj/3aBVpNE=",
       "dev": true
     },
+    "resemblejs": {
+      "version": "2.2.6",
+      "resolved": "https://registry.npmjs.org/resemblejs/-/resemblejs-2.2.6.tgz",
+      "integrity": "sha512-o4sxCTSwTxx5hBFXYn5rsgMuLQT8kufJ5vzKYcRwWhCWERKN4dqZwiMx7+nRrcXouWmiFGD9A486yS4Z1a2PQQ=="
+    },
     "resolve": {
       "version": "1.1.7",
       "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
@@ -3246,8 +3356,7 @@
     "safe-buffer": {
       "version": "5.1.1",
       "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
-      "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
-      "dev": true
+      "integrity": "sha1-iTMSr2myEj3vcfV4iQAWce6yyFM="
     },
     "sass-graph": {
       "version": "2.2.4",
@@ -3369,14 +3478,13 @@
     "semver": {
       "version": "5.4.1",
       "resolved": "https://registry.npmjs.org/semver/-/semver-5.4.1.tgz",
-      "integrity": "sha512-WfG/X9+oATh81XtllIo/I8gOiY9EXRdv1cQdyykeXK17YcUW3EXUAi2To4pcH6nZtJPr7ZOpM5OMyWJZm+8Rsg==",
+      "integrity": "sha1-4FnAnYVx8FQII3M0M1BdOi8AsY4=",
       "dev": true
     },
     "set-blocking": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
-      "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc=",
-      "dev": true
+      "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc="
     },
     "set-immediate-shim": {
       "version": "1.0.1",
@@ -3393,8 +3501,7 @@
     "signal-exit": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.2.tgz",
-      "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=",
-      "dev": true
+      "integrity": "sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0="
     },
     "sntp": {
       "version": "1.0.9",
@@ -3474,20 +3581,10 @@
       "integrity": "sha1-+vUbnrdKrvOzrPStX2Gr8ky3uT4=",
       "dev": true
     },
-    "string_decoder": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
-      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
-      "dev": true,
-      "requires": {
-        "safe-buffer": "5.1.1"
-      }
-    },
     "string-width": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
       "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
-      "dev": true,
       "requires": {
         "code-point-at": "1.1.0",
         "is-fullwidth-code-point": "1.0.0",
@@ -3497,35 +3594,32 @@
         "ansi-regex": {
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
-          "dev": true
+          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
         },
         "strip-ansi": {
           "version": "3.0.1",
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
-          "dev": true,
           "requires": {
             "ansi-regex": "2.1.1"
           }
         }
       }
     },
+    "string_decoder": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
+      "integrity": "sha1-D8Z9fBQYJd6UKC3VNr7GubzoYKs=",
+      "requires": {
+        "safe-buffer": "5.1.1"
+      }
+    },
     "stringstream": {
       "version": "0.0.5",
       "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.5.tgz",
       "integrity": "sha1-TkhM1N5aC7vuGORjB3EKioFiGHg=",
       "dev": true
     },
-    "strip-ansi": {
-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-0.3.0.tgz",
-      "integrity": "sha1-JfSOoiynkYfzF0pNuHWTR7sSYiA=",
-      "dev": true,
-      "requires": {
-        "ansi-regex": "0.2.1"
-      }
-    },
     "strip-bom": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-2.0.0.tgz",
@@ -3550,23 +3644,27 @@
       "integrity": "sha1-HhX7ysl9Pumb8tc7TGVrCCu6+5E=",
       "dev": true
     },
-    "supports-color": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-0.2.0.tgz",
-      "integrity": "sha1-2S3iaU6z9nMjlz1649i1W0wiGQo=",
-      "dev": true
-    },
     "tar": {
       "version": "2.2.1",
       "resolved": "https://registry.npmjs.org/tar/-/tar-2.2.1.tgz",
       "integrity": "sha1-jk0qJWwOIYXGsYrWlK7JaLg8sdE=",
-      "dev": true,
       "requires": {
         "block-stream": "0.0.9",
         "fstream": "1.0.11",
         "inherits": "2.0.3"
       }
     },
+    "tcomb": {
+      "version": "2.7.0",
+      "resolved": "https://registry.npmjs.org/tcomb/-/tcomb-2.7.0.tgz",
+      "integrity": "sha1-ENYpWAQWaaXVNWe5pO6M3iKxwrA="
+    },
+    "throttleit": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/throttleit/-/throttleit-1.0.0.tgz",
+      "integrity": "sha1-nnhYNtr0Z0MUWlmEtiaNgoUorGw=",
+      "dev": true
+    },
     "tiny-lr": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/tiny-lr/-/tiny-lr-0.2.1.tgz",
@@ -3652,12 +3750,26 @@
       "integrity": "sha1-gGmSYzZl1eX8tNsfs6hi62jp5to=",
       "dev": true
     },
+    "units-css": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/units-css/-/units-css-0.4.0.tgz",
+      "integrity": "sha1-1iKGU6UZg9fBb/KPi53Dsf/tOgc=",
+      "requires": {
+        "isnumeric": "0.2.0",
+        "viewport-dimensions": "0.2.0"
+      }
+    },
     "unpipe": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
       "integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw=",
       "dev": true
     },
+    "unquote": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/unquote/-/unquote-1.1.0.tgz",
+      "integrity": "sha1-mOH8YItrhUx1r7G5WvwJm6adlC8="
+    },
     "uri-path": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/uri-path/-/uri-path-1.0.0.tgz",
@@ -3667,8 +3779,7 @@
     "util-deprecate": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
-      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
-      "dev": true
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8="
     },
     "utile": {
       "version": "0.1.7",
@@ -3687,7 +3798,7 @@
     "uuid": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/uuid/-/uuid-3.1.0.tgz",
-      "integrity": "sha512-DIWtzUkw04M4k3bf1IcpS2tngXEL26YUD2M0tMDUpnUrz2hgzUBlD55a4FjdLGPvfHxS6uluGWvaVEqgBcVa+g==",
+      "integrity": "sha1-PdPT55Crwk17DToDT/q6vijrvAQ=",
       "dev": true
     },
     "validate-npm-package-license": {
@@ -3719,6 +3830,11 @@
         }
       }
     },
+    "viewport-dimensions": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/viewport-dimensions/-/viewport-dimensions-0.2.0.tgz",
+      "integrity": "sha1-3nQHR9tTh/0XJfUXXpG6x2r982w="
+    },
     "websocket-driver": {
       "version": "0.6.5",
       "resolved": "https://registry.npmjs.org/websocket-driver/-/websocket-driver-0.6.5.tgz",
@@ -3735,10 +3851,12 @@
       "dev": true
     },
     "which": {
-      "version": "1.0.9",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.0.9.tgz",
-      "integrity": "sha1-RgwdoPgQED0DIam2M6+eV15kSG8=",
-      "dev": true
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/which/-/which-1.3.0.tgz",
+      "integrity": "sha512-xcJpopdamTuY5duC/KnTTNBraPK54YwpenP4lzxU8H91GudWpFv38u0CKjclE1Wi2EH2EDz5LRcHcKbCIzqGyg==",
+      "requires": {
+        "isexe": "2.0.0"
+      }
     },
     "which-module": {
       "version": "1.0.0",
@@ -3749,8 +3867,7 @@
     "wide-align": {
       "version": "1.1.2",
       "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.2.tgz",
-      "integrity": "sha512-ijDLlyQ7s6x1JgCLur53osjm/UXUYD9+0PbYKrBsYisYXzCxN+HC3mYDNy/dWdmf3AwqwU3CXwDCvsNgGK1S0w==",
-      "dev": true,
+      "integrity": "sha1-Vx4PGwYEY268DfwhsDObvjE0FxA=",
       "requires": {
         "string-width": "1.0.2"
       }
@@ -3812,8 +3929,7 @@
     "wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
-      "dev": true
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
     },
     "y18n": {
       "version": "3.2.1",
@@ -3863,6 +3979,15 @@
           "dev": true
         }
       }
+    },
+    "yauzl": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.4.1.tgz",
+      "integrity": "sha1-lSj0QtqxsihOWLQ3m7GU4i4MQAU=",
+      "dev": true,
+      "requires": {
+        "fd-slicer": "1.0.1"
+      }
     }
   }
 }
diff --git a/default/package.json b/default/package.json
index 537b9fe..6cc8ed0 100644
--- a/default/package.json
+++ b/default/package.json
@@ -3,8 +3,9 @@
   "version": "1.0.1",
   "devDependencies": {
     "breakpoint": "^0.1.6",
+    "casperjs": "^1.1.4",
     "grunt": "~1.0.1",
-    "grunt-bless": "^0.2.0",
+    "grunt-bless": "^1.0.2",
     "grunt-contrib-concat": "~1.0.0",
     "grunt-contrib-csslint": "~1.0.0",
     "grunt-contrib-cssmin": "~1.0.1",
@@ -13,6 +14,15 @@
     "grunt-contrib-uglify": "~1.0.1",
     "grunt-contrib-watch": "~1.0.0",
     "grunt-sass": "^1.1.0",
-    "matchdep": "~1.0.1"
+    "matchdep": "~1.0.1",
+    "phantomcss": "^1.1.5",
+    "phantomjs-prebuilt": "^2.1.15"
+  },
+  "dependencies": {
+    "canvas": "^1.6.7",
+    "resemblejs": "^2.2.6"
+  },
+  "scripts": {
+    "test": "casperjs test --ignore-ssl-errors=true tests/sample.js"
   }
 }
diff --git a/default/screenshots/Header_0.diff.png b/default/screenshots/Header_0.diff.png
new file mode 100644
index 0000000..f5ed03c
Binary files /dev/null and b/default/screenshots/Header_0.diff.png differ
diff --git a/default/screenshots/Header_0.fail.png b/default/screenshots/Header_0.fail.png
new file mode 100644
index 0000000..20bc01a
Binary files /dev/null and b/default/screenshots/Header_0.fail.png differ
diff --git a/default/screenshots/Header_0.png b/default/screenshots/Header_0.png
new file mode 100644
index 0000000..e10f123
Binary files /dev/null and b/default/screenshots/Header_0.png differ
diff --git a/default/scss/test.scss b/default/scss/test.scss
index 1b46efc..74e5f06 100644
--- a/default/scss/test.scss
+++ b/default/scss/test.scss
@@ -1,3 +1,3 @@
 div {
-  content: "it works";
+  content: "it really works";
 }
\ No newline at end of file
diff --git a/default/tests/sample.js b/default/tests/sample.js
new file mode 100644
index 0000000..b723849
--- /dev/null
+++ b/default/tests/sample.js
@@ -0,0 +1,31 @@
+var phantomcss = require('phantomcss');
+
+// start a casper test
+casper.test.begin('Tags', function(test) {
+
+    phantomcss.init({
+        rebase: casper.cli.get('rebase')
+    });
+
+    // open page
+    casper.start('https://bonds.dev/');
+
+    // set your preferred view port size
+    casper.viewport(1024, 768);
+
+    casper.then(function() {
+        // take the screenshot of the whole body element and save it under "body.png". The first parameter is actually a CSS selector
+        phantomcss.screenshot('header.header', 'Header');
+    });
+
+    casper.then(function now_check_the_screenshots() {
+        // compare screenshots
+        phantomcss.compareAll();
+    });
+
+    // run tests
+    casper.run(function() {
+        console.log('\nTHE END.');
+        casper.test.done();
+    });
+});
\ No newline at end of file