A solver for IK with CCD Algorithm. 
		[name] solves Inverse Kinematics Problem with CCD Algorithm.
		[name] is designed to work with [page:SkinnedMesh] loaded by [page:MMDLoader] but also can be used for generic [page:SkinnedMesh].
		
		var ikSolver;
		// Load MMD resources and instantiate CCDIKSolver
		new THREE.MMDLoader().load(
			'models/mmd/miku.pmd',
			function ( mesh ) {
				ikSolver = new CCDIKSolver( mesh, mesh.geometry.iks );
				scene.add( mesh );
			}
		);
		function render() {
			animate(); // update bones
			if ( ikSolver !== undefined ) ikSolver.update();
			renderer.render( scene, camera );
		}
		
		[example:webgl_loader_mmd]
		[page:SkinnedMesh mesh] — [page:SkinnedMesh] for which [name] solves IK problem.
		[page:Array iks] — An array of [page:Object] specifying IK parameter. target, effector, and link-index are index integers in .skeleton.bones.
		The bones relation should be "links[ n ], links[ n - 1 ], ..., links[ 0 ], effector" in order from parent to child.
		
Creates a new [name].
An array of IK parameter passed to the constructor.
[page:SkinnedMesh] passed to the constructor.
Return [page:CCDIKHelper]. You can visualize IK bones by adding the helper to scene.
Update bones quaternion by solving CCD algorithm.
[link:https://github.com/mrdoob/three.js/blob/master/examples/js/animation/CCDIKSolver.js examples/js/animation/CCDIKSolver.js]