moving email config to own repo

A few benefits here:

1) those interested in my vim / git / etc hacks don't get noise
2) I don't need to install email crap anywhere I need my vimrc

Really if I'm doing this I should probably break my vim setup out into its own
repo as well, but that's a separate battle for a different day; I also don't
want or need the same setup locally for dev as I'd want on say, a VPS.
ignore fish generated completions