Added basic collision stuff.
Added bounce.
Changed example for physics from ¨separation¨to ¨physics¨.
Added link for physics to example index.html
Added physics to readme features.
Merge branch 'master' into #67-simple-SAT-based-physics-system

Conflicts:
	build/glue.js
	build/glue.min.js
Merge pull request #112 from spilgames/#67-simple-SAT-based-physics-system

#67 simple sat based physics system