chore(package): update karma to version 1.4.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -48,7 +48,7 @@
     "istanbul-instrumenter-loader": "1.2.0",
     "jasmine-core": "2.5.2",
 
-    "karma": "1.3.0",
+    "karma": "1.4.0",
     "karma-chrome-launcher": "2.0.0",
     "karma-coverage": "1.1.1",
     "karma-jasmine": "1.1.0",