Removed dependency on 'split' package.

It was only being used by visualization code, anyway.
Also removed a spurrious 'Data.Maybe' import in Rhudimentary.hs.
Added .cabal, LICENSE file, Setup.hs file, etc.

Also put some setup instructions in the readme.
Added index.html which redirects to the Botworld pdf.
Merge branch 'gh-pages' of github.com:machine-intelligence/botworld into gh-pages