Vim_plugin

1. first of all: install pathogen

    https://github.com/tpope/vim-pathogen

2. install nerdtree

　 https://github.com/scrooloose/nerdtree

　　using NERDTreeToggle to boot this plugin

　　using 'u' can go to upper directory

　　using 'm' come out a menu window

　　using 'ctrl - w - h' move cursor to left window

      using 'ctrl - w - l' move cursor to right window

3. python.vim

　　https://github.com/hdima/python-syntax

4. Python-mode

　　https://github.com/klen/python-mode

last but not least: uninstall a plugin:

　　　　　　using this command " rm -rf bundle/python-mode "