github无法访问?试试修改hosts

github国内无法访问时，可以试试如下修改hosts，亲测有效：

204.232.175.78 http://documentcloud.github.com
207.97.227.239 http://github.com
204.232.175.94 http://gist.github.com
107.21.116.220 http://help.github.com
207.97.227.252 http://nodeload.github.com
199.27.76.130 http://raw.github.com
107.22.3.110 http://status.github.com
204.232.175.78 http://training.github.com
207.97.227.243 http://www.github.com

你懂得...