added group class
added system
renamed stuff
main and screen now singletons
setup group and system interface
can process
added array, group and system basics
fixed tests, adding new systems
converting stuff into systems
fixed up templates
adding triggers to input systems
input updates
tweaks, added render to draw
removed scene clear, drawlist is gone
removed drawlist, group dispose fix, fixing example dom
fixed up examples, almost done
fixed platform example
removed git status
Merge branch 'system' of github.com:bendangelo/EntityJS into system
renamed class to base, bug fixes