http://www.cnblogs.com/dudu/archive/2011/06/24/git_on_windows.html
http://www.cnblogs.com/henllyee/archive/2012/02/02/git_firt.html
http://www.cnblogs.com/baizx/archive/2010/08/09/1796122.html
http://www.cnblogs.com/wojilu/archive/2011/11/16/using-git-with-visual-studio.html