rainbow

1. getting started shows the basics of using Rainbow
2. intro to rainbow dives into how surface reconstruction would work and the "right" way of builds apps would be.
3. hello physics shows how to enable physics and create simple scenes
4. intro to animation shows how to create basic property tweening animations
5. controls shows a basic control model
6. extrude graphs shows how we can build data visualizations using extruded 3D
7. load mesh shows how to load a scene from a file (only works when hosted in a web server)