Updated gruntfile to use Karma instead of Testacular

Author: wesleycho

gruntFile.js

@@ -1,22 +1,22 @@
 module.exports = function (grunt) {
 
-  grunt.loadNpmTasks('grunt-testacular');
+  grunt.loadNpmTasks('grunt-karma');
   grunt.loadNpmTasks('grunt-contrib-jshint');
 
   // Default task.
-  grunt.registerTask('default', ['jshint', 'testacular']);
+  grunt.registerTask('default', ['jshint', 'karma']);
 
-  var testacularConfig = function(configFile, customOptions) {
+  var karmaConfig = function(configFile, customOptions) {
     var options = { configFile: configFile, keepalive: true };
     var travisOptions = process.env.TRAVIS && { browsers: ['Firefox'], reporters: 'dots' };
     return grunt.util._.extend(options, customOptions, travisOptions);
   };
 
   // Project configuration.
   grunt.initConfig({
-    testacular: {
+    karma: {
       unit: {
-        options: testacularConfig('test/test.conf.js')
+        options: karmaConfig('test/test.conf.js')
       }
     },
     jshint:{