Create a new, seperate RuboCop file that uses our RSpec rule
configuration if a specified tap has a `spec` directory.
Also, while we're here, fix up the various rules so that we don't have
any outdated TODOs, disable some rules for good and fix `brew style`
for Homebrew/bundle.
This is the (partially) documented public API for Homebrew.
The main class you should look at is the {Formula} class (and classes linked from there). That's the class that's used to create Homebrew formulae (i.e. package descriptions). Assume anything else you stumble upon is private.