upgrade(mocha): ^2.2.5 -> ^3.0.1

Author: David Zukowski

package.json

@@ -143,7 +143,7 @@
     "karma-mocha-reporter": "^2.0.0",
     "karma-phantomjs-launcher": "^1.0.0",
     "karma-webpack-with-fast-source-maps": "^1.9.2",
-    "mocha": "^2.2.5",
+    "mocha": "^3.0.1",
     "nodemon": "^1.8.1",
     "phantomjs-prebuilt": "^2.1.3",
     "react-addons-test-utils": "^15.0.0",