xbindkeysrc: it was a horrible idea

Whenever I *really* want to increase brightness, mpd toggles like a
lunatic.
zsh/functions/my_prompt: replace odd pieces with nice fat squares
xinitrc: spruce it with if|else conditionals
Delete "teamocil.run.yml" config

I'll never use it again, anyway.
Makefile: do not warn if file not exists
Version control "xmonad.hs"