[vim] Set the vim environment from github

MANUALLY INSTALL

1. Check out from github
   

   git clone https://github.com/Jumbo88888/vimrc.git ~/.vim
   cd ~/.vim
   git submodule update --init
   
   

2. Install ~/.vimrc and ~/.gvimrc
   

   ./install-vimrc.sh
   

Reference:

• Jumbo88888/vimrc