support http.request syntax in new versions of node without breaking older node versions. replaced gzip with node's zlib

.gitignore

@@ -1 +1 @@
-DS_Store
+.DS_Store

lib/exceptional.js

@@ -1,5 +1,5 @@
 var HTTP = require('http');
-var gzip = require('./gzip').gzip;
+var zlib = require('zlib');
 var fs = require('fs');
 
 var Exceptional = {
@@ -57,27 +57,57 @@ var Exceptional = {
   },
 
   send_error: function(doc) {
-    gzip(doc, 1, function(err, data) {
-
-      var client  = HTTP.createClient(Exceptional.Port, Exceptional.Host);
+    if(!Buffer.isBuffer(doc))
+      doc = new Buffer(doc);
+
+    zlib.gzip(doc, function (err, data) {
+      var path = '/api/errors?api_key=' + Exceptional.API_KEY + "&protocol_version=" + Exceptional.PROTOCOL_VERSION;
+      var request = null;
 
       var headers = {
         'Host' : Exceptional.Host,
-        'Content-Length' : data.length
+        'Content-Length' : data.length,
+        'Content-Type'  : 'application/json; charset=UTF-8'
       };
 
-      var request = client.request('POST', '/api/errors?api_key=' + Exceptional.API_KEY + "&protocol_version=" + Exceptional.PROTOCOL_VERSION, headers);
+      // use feature detection to fallback to deprecated
+      if (!HTTP.request)
+      {
+        // older versions of nodejs use http.createClient
+        var client  = HTTP.createClient(Exceptional.Port, Exceptional.Host);
+        request = client.request('POST', path, headers);
+
+        request.on('response', function (response) {
+          if (response.statusCode === 200) {
+            if (Exceptional.VERBOSE) console.log("Error data successfully sent to " + Exceptional.Host + ':' + Exceptional.Port );
+          } else {
+            if (Exceptional.VERBOSE) console.log("Error sending to " + Exceptional.Host + ":" + Exceptional.Port + " :" + response.statusCode);
+          }
+        });
+      } 
+      else
+      {
+        // newer versions of nodejs use http.request
+        var options = {
+          host: Exceptional.Host,
+          port: Exceptional.Port,
+          path: path,
+          method: 'POST',
+          header: headers
+        };
+
+        request = HTTP.request(options, function(response) {
+          if (response.statusCode === 200) {
+            if (Exceptional.VERBOSE) console.log("Error data successfully sent to " + Exceptional.Host + ':' + Exceptional.Port );
+          } else {
+            if (Exceptional.VERBOSE) console.log("Error sending to " + Exceptional.Host + ":" + Exceptional.Port + " :" + response.statusCode);
+          }
+        });
+      }
 
+      // post the data
       request.write(data);
       request.end();
-
-      request.on('response', function (response) {
-        if (response.statusCode === 200) {
-          if (Exceptional.VERBOSE) console.log("Error data successfully sent to exceptional");
-        } else {
-          if (Exceptional.VERBOSE) console.log("Error sending to api.getexceptional.com :" + response.statusCode);
-        }
-      });
     });
   }
 };