chore(package): update rimraf to version 3.0.2

Closes #12

Author: greenkeeper[bot]

package.json

@@ -54,7 +54,7 @@
     "eslint-plugin-import": "^2.8.0",
     "mocha": "^5.0.1",
     "nyc": "^11.4.1",
-    "rimraf": "^2.6.2",
+    "rimraf": "^3.0.2",
     "sinon": "^5.0.0"
   },
   "nyc": {