add missing karma plugins to devDependencies in package.json

jasmine and chrome launcher, so 'npm install' fetches everything

Author: rodyhaddad

package.json

@@ -11,7 +11,9 @@
     "grunt-contrib-concat": "~0.3.0",
     "grunt-contrib-uglify": "~0.2.4",
     "grunt-contrib-jshint": "~0.6.4",
-    "grunt-contrib-sass": "~0.5.0"
+    "grunt-contrib-sass": "~0.5.0",
+    "karma-jasmine": "~0.1.3",
+    "karma-chrome-launcher": "~0.1.0"
   },
   "scripts": {
     "test": "./node_modules/.bin/karma start ionic.conf.js --single-run --browsers Firefox"