Update karma-browserify as well

Author: Henry Mollman

package.json

@@ -135,7 +135,7 @@
     "grunt-newer": "1.1.1",
     "grunt-nodemon": "0.4.0",
     "karma": "0.12.37",
-    "karma-browserify": "4.2.1",
+    "karma-browserify": "5.1.1",
     "karma-chrome-launcher": "0.1.12",
     "karma-coverage": "0.2.6",
     "karma-jasmine": "0.3.6",