chore(package): update grunt-karma to version 3.0.1

Closes #12

Author: greenkeeper[bot]

package.json

@@ -18,7 +18,7 @@
     "grunt-contrib-watch": "^1.0.0",
     "grunt-filerev": "^2.3.1",
     "grunt-google-cdn": "^0.4.0",
-    "grunt-karma": "^2.0.0",
+    "grunt-karma": "^3.0.1",
     "grunt-newer": "^1.2.0",
     "grunt-ngmin": "^0.0.3",
     "grunt-svgmin": "^5.0.0",