Bone: Clean up.

src/objects/Bone.js

@@ -4,15 +4,15 @@
  * @author ikerr / http://verold.com
  */
 
-THREE.Bone = function ( belongsToSkin ) {
+THREE.Bone = function ( skin ) {
 
 	THREE.Object3D.call( this );
 
-	this.skin = belongsToSkin;
-
 	this.type = 'Bone';
+
+	this.skin = skin;
+
 };
 
 THREE.Bone.prototype = Object.create( THREE.Object3D.prototype );
 THREE.Bone.prototype.constructor = THREE.Bone;
-