Set the procline for `rtest` to something saner
git pus => push
Simplify ruby-version
Upgrade TM_RUBY to 2.0.0-p353
Add current ruby to RPROMPT
(Conditionally) load Homebrew ZSH's helpfiles
Change `ber` into function & take into account spring
Split out legacy tuning hooks for ruby <= 2.1
igrep => grep -i