feat(build): show elapsed time for grunt tasks

yeoman/yeoman#1151

Author: passy

templates/common/Gruntfile.js

@@ -15,6 +15,7 @@ var mountFolder = function (connect, dir) {
 module.exports = function (grunt) {
   // load all grunt tasks
   require('matchdep').filterDev('grunt-*').forEach(grunt.loadNpmTasks);
+  require('time-grunt')(grunt);
 
   // configurable paths
   var yeomanConfig = {

templates/common/_package.json

@@ -24,7 +24,8 @@
     "matchdep": "~0.1.2",
     "connect-livereload": "~0.2.0",
     "grunt-google-cdn": "~0.2.0",
-    "grunt-ngmin": "~0.0.2"
+    "grunt-ngmin": "~0.0.2",
+    "time-grunt": "~0.1.0"
   },
   "engines": {
     "node": ">=0.8.0"