Refactor to use _positionGetter instead of ourGetPosition
Refactor _customInnerRender to bind scroller as this
Remove commented code in customInnerRender
Create translateXY and translateZ
Fix issue with origin
Minor edit to main.js focused on visual appearance
Merge physics engine with refactor code
Merge pull request #24 from fay-jai/refactor

Merge physics engine with refactor code