在线js
http://jsrun.net/ (包含工具)
https://codepen.io/sparanoid/pen/nHAmi
http://jsfiddle.net/
activiti engine api
http://www.mossle.com/docs/activiti/index.html
idea plugin document
http://www.jetbrains.org/intellij/sdk/docs/basics/plugin_structure/plugin_components.html
//linux命令相关
http://man.linuxde.net/