mouse movement! also, you're now stuck within the confines of the town.
Merge branch 'master' into catsrabbits
Critter: changed drawEars so we can draw ears without necessarily
enabling GL_TEXTURE_2D 
Cat: completed drawHead and drawEars methods 
Rabbit and Cat: revised drawHead so that enable GL_TEXTURE_2D is outside
drawEars method in drawHead method