This project builds on other work I've covered on this blog in these posts: Using Unity native VR, Re-centering the avatar and knowing when the health and safety warning has been dismissed, Seeing your hands in VR , Hand selection UI prototype, Raising your hand, and Thought bubbles in a Rift scene using world space canvases.
This demo requires a Rift DK2, a LEAP Motion, Windows 8 or later, and Oculus Runtime 0.7. If you want to try it out, you can download it from the 3D Jam web site.
I'm considering adding a table with samples from each layer that you can pick up and look at a bit more closely. Don't know if I can get it done in time for the jam, though.