chore(package): update karma-mocha to version 2.0.1

Closes #41

Author: greenkeeper[bot]

package.json

@@ -77,7 +77,7 @@
         "karma-chrome-launcher": "^2.2.0",
         "karma-coverage-istanbul-reporter": "^2.0.4",
         "karma-es6-shim": "^1.0.0",
-        "karma-mocha": "^1.3.0",
+        "karma-mocha": "^2.0.1",
         "karma-mocha-reporter": "^2.2.5",
         "karma-phantomjs-launcher": "^1.0.4",
         "karma-remap-istanbul": "^0.6.0",