Fixed Geometry.faceVertexUvs type

faceVertexUvs: Vector2[][][];
The meaning of the arrays:
1) Array of UV layers
2) Array of faces
3) Array of UV coordinates per face
Example Usage:
geometry.faces.push(new THREE.Face3(0, 1, 2));
geometry.faceVertexUvs[0].push([
new THREE.Vector2(0, 0),
new THREE.Vector2(1, 0),
new THREE.Vector2(0, 1)
]);