Remove some unused dot files.
Remove old bashrc setup, using zsh's instead where possible.
Show completions on the first 'tab' in bash.
The .gemrc YAML changed.
Convert 's' to a function so bash can use it.

A bash alias can't 'return'.
Remove some old shell aliases.
Add 'bl' (bundle --local).
Use the `less` -R option by default.
Add ruby mem & gc aliases.