placeholder readme
add framebuffer support and make gl optional
update build instructions
-O2 to remove wierdness
link to tests
Update build instructions
Add some notes about SDL_mixer/SDL_gfx
typo
Update README

Fixes #5
add not on using cmake to README
version 1
version 2
simplify fullscreen handling using new fullscreen_strategy api
use SDL_SetMouseFocus
listen for mouse up on document (fixes mouseup outside canvas)
send mouse move on enter/leave
Include timers when using cmake (#29)