chore(package): update mocha to version 3.0.1

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -23,6 +23,6 @@
   },
   "devDependencies": {
     "chai": "^3.0.0",
-    "mocha": "^2.2.5"
+    "mocha": "^3.0.1"
   }
 }