http://my.ss.sysu.edu.cn/wiki/display/SPSP/Lab+04.+Asynchronous+JavaScript
- 安装node.js
- 【可选】在浏览器中安装livereload插件:http://feedback.livereload.com/knowledgebase/articles/86242-how-do-i-install-and-use-the-browser-extensions
- npm install
- grunt watch
- 用浏览器打开http://localhost:8000/