Git 是一个分布式的版本控制工具。分布式主要是针对已有的 SVN 、CVS 受中央控制的版本控制工具而言的,在git里，每个代码库在相互独立的同时，又可以相互交换代码（通过push/pull）进行代码的交换。
github 开始示例
Quick setup — if you've done this kind of thing before
or HTTP SSH https://github.com/robby0/Clouds.git
We recommend every repository include a README, LICENSE, and .gitignore.
Create a new repository on the command line
touch README.md
git init
git add README.md
git commit -m "first commit"
git remote add origin https://github.com/robby0/Clouds.git
git push -u origin master
Push an existing repository from the command line
git remote add origin https://github.com/robby0/Clouds.git
git push -u origin master
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http://my.eoe.cn/curious/archive/3563.html
http://www.yangzhiping.com/tech/github.html
http://www.cnblogs.com/super-d2/p/3340639.html
http://www.52gvim.com/article/Github%E7%9A%84%E4%BD%BF%E7%94%A8/