bugfix

Author: Jiang Shang

package.json

@@ -9,6 +9,7 @@
     "babel-core": "^5.8.22",
     "babel-loader": "^5.3.2",
     "lodash": "^3.10.1",
+    "mocha": "^2.3.3",
     "webpack": "^1.11.0"
   },
   "scripts": {