Creates a cube texture made up of six images.
		var loader = new THREE.CubeTextureLoader();
		loader.setPath( 'textures/cube/pisa/' );
		
		var textureCube = loader.load( [
			'px.png', 'nx.png',
			'py.png', 'ny.png',
			'pz.png', 'nz.png'
		] );
		var material = new THREE.MeshBasicMaterial( { color: 0xffffff, envMap: textureCube } );
		
		CubeTexture is almost equivalent in functionality and usage to [page:Texture]. The only differences are that the images are an array of 6 images as opposed to a single image, and the mapping options are [page:Textures THREE.CubeReflectionMapping] (default) or [page:Textures THREE.CubeRefractionMapping]
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]