Initial commit

I have on occasion tried to keep dotfiles in git but always made it
complicated enough that I didn't end up following through. This time
around I'm going to try and just keep it simple, a standard .git dir
with a .gitignore specifying '*'. Makes it clean but easy. Maybe it will
work better this time around.
Add initial Vim configuration

Next step is to add bundles. That will be interesting.
Add global gitconfig
Add vim plugins

Use git submodules to do it since that's basically how all of the
pathogen plugins are installed anyway