操作：
$ git clone https://github.com/zjun615/DragListView.git
Cloning into 'DragListView'...
fatal: unable to access 'https://github.com/zjun615/DragListView.git/': Failed to connect to 127.0.0.1 port 1080: Connection refused
解决方案：
查看代理：git config --global http.proxy
取消代理：git config --global --unset http.proxy
参考：http://blog.csdn.net/lly20000/article/details/46903143
