package.json: add npm scripts

frontend/package.json

@@ -1,28 +1,33 b''
 {
   "name": "errormator",
   "description": "JS layer for AppEnlight",
   "devDependencies": {
     "bower": "^1.8.8",
     "bower-requirejs": "1.2.0",
     "grunt": "1.0.1",
     "grunt-angular-templates": "1.0.4",
     "grunt-bower-concat": "1.0.0",
     "grunt-bower-requirejs": "2.0.0",
     "grunt-contrib-concat": "1.0.1",
     "grunt-contrib-copy": "1.0.0",
     "grunt-contrib-jshint": "1.0.0",
     "grunt-contrib-less": "1.3.0",
     "grunt-contrib-nodeunit": "1.0.0",
     "grunt-contrib-requirejs": "1.0.0",
     "grunt-contrib-uglify": "1.0.1",
     "grunt-contrib-watch": "1.0.0",
     "grunt-remove-logging": "0.2.0",
     "ini": "1.3.4",
     "karma": "0.13.22",
     "underscore": "1.8.3",
     "yo": "1.8.4"
   },
   "dependencies": {
     "grunt-cli": "^1.3.2"
+  },
+  "scripts": {
+    "bower": "bower install",
+    "build": "grunt",
+    "watch": "grunt watch"
   }
 }