Installation:

    git clone git://github.com/celavek/vimconfig.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

Add submodule e.g.:

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

Upgrade a plugin bundle:

    cd ~/.vim/bundle/fugitive
    git pull origin master

Upgrade all bundles:

    git submodule foreach git pull origin master

Avoid dirtying submodule's tree:

    Generating helptags with pathogen's ":Helptags" dirties the submodules repos.
    Solution to that is to add ignore = dirty in ".gitmodules" for each submodule.