After cloning, use:
cd ~/.vim
git submodule init
git submodule update
cd ~
ln -s .vim/vimrc .vimrc
Command-T does not work on Debian 6 AFAIK. On OSX Snow Leopard, use:
cd ~/.vim/bundle/command-t
rake make
to enable Command-T.
If you are using RVM, remember to go back to the system ruby for this step with:
rvm use system
After making Command-T you can obviously go back to your normal Ruby.
Remember to set your Github username and API token with:
git config --global github.user Username
git config --global github.token APIToken