Add base16 colourschemes

Signed-off-by: Spencer Deinum <spencerdeinum@gmail.com>
Replace gvim with mvim launcher

Signed-off-by: Spencer Deinum <spencerdeinum@gmail.com>
Cleanup colors and fonts

Signed-off-by: Spencer Deinum <spencerdeinum@gmail.com>
Remove powerline plugin

Signed-off-by: Spencer Deinum <spencerdeinum@gmail.com>