Three.js morphTarget debugging

Example based on http://threejs.org/examples/webgl_morphtargets_horse

Use number keys 1,2,3,4,5,6 to switch between models.

1. horse.js
2. parrot.js
3. flamingo.js
4. test_3464.js
5. test_9752.js
6. test_18986.js

horse.js, parrot.js, and flamingo.js are from https://github.com/mrdoob/three.js/tree/master/examples/models/animated , and they contain less than 500 vertices.

Three test files are includes that contain 3564, 9752, and 18986 vertices.