Updated README and removed change log from it.
Updated README and removed change log from it.

jzitelli/cannon.js,Tezirg/cannon.js,schteppe/cannon.js,Tezirg/cannon.js,jzitelli/cannon.js,mcanthony/cannon.js,beni55/cannon.js,beni55/cannon.js,mcanthony/cannon.js,schteppe/cannon.js