grunt

best tutorial, step by step:
http://fairwaytech.com/2014/01/understanding-grunt-part-1-installation-linting-concatenation-and-minification/


linting
making sure that our code adheres to good JavaScript practices

concat
整合檔案的任務

uglify
是用來設定壓縮檔案並根據專案的 metadata 產生一些註解。



watch
This can be run on the command line with grunt watch. When it detects any of the files specified have changed (here, I just use the same files I told JSHint to check), it will run the tasks you specify, in the order they appear.

● 外掛原則上可以分成兩類：開發過程的工具、發佈的工具

◎ 發佈的工具，以下將介紹：

　　grunt-contrib-concat

　　grunt-contrib-uglify

　　grunt-contrib-cssmin

　　grunt-contrib-copy

　　grunt-usemin

◎ 開發過程的工具，以下將介紹：

　　grunt-contrib-jshint

　　grunt-contrib-connect

　　grunt-contrib-watch