Steps to get this working on a new system:
git clone git://github.com/jordanmueller/dotvim.git
cd ~
ln -s [your path to dotvim] .vim
ln -s [your path to dotvim]/vimrc .vimrc
cd .vim
git submodule init
git submodule update
here is a nice link to learn more about submodules: http://chrisjean.com/2009/04/20/git-submodules-adding-using-removing-and-updating/
A lot of the stuff I do here is from this post by lucisferre.net http://lucisferre.net/2011/07/15/vim-from-start-to-finish/