Finally got animations in from Maya.

The system to get animations into three.js from maya is a lengthy and
also very annoying one:
1) Install Collada exportor for Maya.
2) Install Blender and the three.js blender exporter that comes with
three.js (utils/converters)
3) Create your models and animations in maya.
4) Export geometry and animations from Maya in Collada format.
5) Import into Blender, and export them in three.js format: Include
morph targets ONLY!
6) In three.js to play the animation, the morph target must be updated
per keyframe rendered in the render() function.