Thanks to Josh Cheek I finally went and started the documentation
project I've been planning to do since '09.

  http://trans.github.com/ruby/core/

The standard library is nearly ready too, and I will need to tie them
together some way. But I think it's a good start.

I becomes clear in doing this just how much the libs, mainly the
standard libs, could use improvement. So I will designate my branch as
purely a fork for doing doc updates, and charge myself with improving
them as time permits.