Reanimate examples

[thoughtspile]

The /examples folder has a ton of examples, but some are plain broken, some import grafar from the wrong place, and some are written for an older version. Moreover, some examples so similar there is no value in having both of them around. Once the examples are cleaned, we could turn them into a gallery a la d3 or threejs

This is a great place to start if you want to play with grafar and help the library move forward.