Separated methods that draw things related to debugging into separate 'draw_debug' method.  The 'Enter' key now works as an alternative to clicking start on main menu.
1-Added a 'debug' module which contains some functions to aid in collision debugging by providing visual cues as to where collisions are occurring.  2-Added a method within '_draw_debug' to call function within new 'debug' module and draw collision points.  3-Moved debug text for bottom right green text into the new '_draw_debug' method.