Progress on py_wall_sticky

A bunch of new files on my branch
-Travis
Updated Snail

Updated the main sprite for the snail with a more consistent color
scheme (very small changes), Added snail-swatches for Illustrator,
updated snail eyes with more types, and added mockups.
-Travis
Merge pull request #1 from TheDevilsWaffle/StickingToWalls

Confirming merge