chore(package): update karma to version 2.0.4

Closes #246

Author: greenkeeper[bot]

package.json

@@ -155,7 +155,7 @@
     "ghooks": "1.3.2",
     "i18next-extract-gettext": "3.1.3",
     "isparta-loader": "2.0.0",
-    "karma": "1.7.0",
+    "karma": "2.0.4",
     "karma-chai": "0.1.0",
     "karma-coverage": "1.1.1",
     "karma-coveralls": "1.1.2",