Add bash profile

* I've wanted to simplify my environment for a while now. Oh my zsh just
  seems bloated, and I don't think I use (m)any of the features.
* This is a simple profile that gives me a prompt similar to what I'm
  used to. It includes:

  * current git branch
  * "dirty" status of branch
  * current path
  * cOlOrZ!
Port some useful aliases over from zsh profile
Source secrets & chruby in bash
Rename .zshenv to .environment
Source environment settings in bash
Remove "oh my zsh"

* It's bloated. I don't really do anything worth the dependency. I've
  tried to reach out to help with maintenance and got no reply.
Remove zsh profile