we're out of the bash business... if we have a locval copy of zsh, then run it.
Merge branch 'master' of https://github.com/aeakett/dotfiles

* 'master' of https://github.com/aeakett/dotfiles:
  turn on the fancy symbols in powerline
  -add pathogen to vim -add vim powerline -add solarized vim theme -clean up some annoying git config stuff
since we're out of the bash business, force launching of zsh (this should make things work under screen)