ubuntu或carli安装与配置`zsh`与`oh-my-zsh`

在ubuntu中安装与配置zsh与oh-my-zsh:
http://www.jianshu.com/p/546effd99c35
定制你自己的zsh主题:
https://github.com/robbyrussell/oh-my-zsh/wiki/themes
个人比较喜欢 bira主题。