- started refactoring and cleanup
 * regrouped method of main three-js element in a more logical manner
 * updated main three-js element with correct pointer event handlers
 * updated OrbitControls with updated pointerEvents (work in progress as the polyfill is currently
partially broken)
 * added support for multiple active scenes (not yet when combined with post process fx)
-cleaned up code of some of the sub elements
- minor styling update

- updated demo