Fixed testing using grunt

Author: wesleycho

gruntFile.js

@@ -5,6 +5,11 @@ module.exports = function (grunt) {
   // Default task.
   grunt.registerTask('default', ['karma']);
 
+  var karmaConfig = function(configFile, customOptions) {
+    var options = { configFile: configFile, keepalive: true };
+    return grunt.util._.extend(options, customOptions);
+  };
+
   // Project configuration.
   grunt.initConfig({
     karma: {