gitHub 遠程操作 常用命令 使用指南

https://github.com/webcoding/useGit/blob/master/README.md

http://blog.csdn.net/ithomer/article/details/7529022

http://www.ruanyifeng.com/blog/2014/06/git_remote.html

https://help.github.com/articles/syncing-a-fork/