If necessary, backup and remove your /.vim directory and /.vimrc file.
Clone this repository to ~/.vim/
git clone git@github.com:libingcun/vimconfig.git ~/.vim
(If you're behind a firewall that blocks port 9418, replace git: with https: in the above URL.)
Alternatively, if for some bizarre reason you don't have git installed, you can download a zip or tar file using the link on GitHub.
Finally, symlink .vimrc:
ln -s ~/.vim/vimrc ~/.vimrc
cd ~/.vim
git pull
Then in vim:
:helptags ~/.vim/doc