Super quick install:

curl https://raw.github.com/sebastian/vim-config/master/quickinstall.sh | sh

Somewhat slower install:

Clone the git repository:

git clone git://github.com/sebastian/vim-config.git ~/.vim

Now get the bundles:

cd ~/.vim
git submodule init
git submodule update

Setup your .vimrc and .gvimrc

cd ~/
ln -s .vim/vimrc .vimrc
ln -s .vim/gvimrc .gvimrc

That should be it.