fix tests, start using EventEmitter3

Author: hpihkala

package.json

@@ -17,12 +17,12 @@
   "license": "",
   "dependencies": {
     "debug": "*",
-    "sinon": "^1.17.5",
+    "eventemitter3": "*",
     "socket.io-client": "1.3.7"
   },
   "devDependencies": {
     "mocha": "*",
-    "eventemitter2": "*",
-    "mockery": "*"
+    "mockery": "*",
+    "sinon": "^1.17.5"
   }
 }