cleanup

mkdir ~/tmp
mv ~/.vim    ~/tmp
mv ~/.vimrc  ~/tmp
mv ~/.gvimrc ~/tmp

install

ln -s ~/.vim/.vimrc ~/.vimrc
git clone --recursive https://github.com/isbjorn/vimfiles.git ~/.vim
vim -c BundleInstall
# wait for minute, then :qa

update

cd ~/.vim
git pull

credits

Ideas from: https://github.com/gmarik