chore(package): add support for running karma in firefox

Closes #209

Author: benjaminbauer

package.json

@@ -8,6 +8,7 @@
   "devDependencies": {
     "karma": "^0.12.16",
     "karma-chrome-launcher": "^0.1.4",
+    "karma-firefox-launcher": "^0.1.3",
     "karma-jasmine": "~0.1.0",
     "protractor": "^2.1.0",
     "http-server": "^0.6.1",

test/karma.conf.js

@@ -15,7 +15,7 @@ module.exports = function(config){
 
     frameworks: ['jasmine'],
 
-    browsers : ['Chrome'],
+    browsers : ['Chrome', 'Firefox'],
 
     plugins : [
             'karma-chrome-launcher',