New images

Fixes #40

I know they aren't pretty.  That is about the best of my ability.  It would probably be wise to find a set online that we know we can use without worry.

I also removed the chessboard that was at the wrong rotation.

Making 12 images that are lined up is a PIA so I made a support program to split one png into the 12 that we need.  The program requires png++ and libpng, I imagine anyone who wants to use it can manage finding them on his/her own.