Installation:

    git clone git://github.com/nelstrom/dotvim.git ~/.vim

Create symlinks:

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

Switch to the `~/.vim` directory, and fetch submodules:

    cd ~/.vim
    git submodule init
    git submodule update

Installing plugins as submodules
    $ cd ~/.vim
    $ git submodule add http://github.com/tpope/vim-fugitive.git bundle/vim-fugitive
    $ git add .
    $ git commit -m "Install Fugitive.vim bundle as a submodule."

Update plugins
    Single plugin

      $ cd bundle/vim-fugitive
      $ git pull origin master

    All  plugins
      $ git submodule foreach git pull origin master

See http://vimcasts.org/episodes/synchronizing-plugins-with-git-submodules-and-pathogen/ for more information.