removed basic physics
removed surface and rectangle
stage does not render
fixed entity
fixed game#render
stubbed DesktopWindow#render
organized spec dirs
removed desktopwindow
naught gem
null object, black hole
fixed guardfile
trimmed Stage
removed safe loop context for game
cleaned V spec
preferred context
updated null objects
game default context is null
replaced null objects with null context
fixed game render spec
misc organization