refactored renderer, ball demo starting to work, need to flesh out render api
render layer respecting camera position, still need to flip y axis so that increasing y means up
fixed y axis
fixed camera zoom, renamed basic demo to coordinate demo
added some comments
syncing, simplified the coordinate demo a little
fixed circle drawing, passing camera to layers upon creation
started layer debug grid, needs to be refactored for performance
fixed debug grid, need to add center camera crosshairs with coordinates
drawing camera crosshairs, need to add sprite demo next
added comment
Merge pull request #44 from evillemez/renderer

Renderer