Reworked collision algorithms to snap bonzo aligned with the tile so
that he can actually walk against a wall and jump through a 2 block wide
opening. However, these snapping algorithms are making so far one thing
impossible: Bonzo cannot jump into a 2 block wide hallway from 1 block
below with a ceiling blocking him.
GoToScreen Finally tells you which level you are currently looking at.
Added to the readme a credits section for the original game.

Re-organsied and updated the 'tasks' sections. The order displayed now
is roughly the order I am going to tackle the majour components.