A loader for loading a .pcd resource. 
		Point Cloud Data is a file format for Point Cloud Library. 
		Loader support ascii and (compressed) binary.
		
		// instantiate a loader
		var loader = new THREE.PCDLoader();
		// load a resource
		loader.load(
			// resource URL
			'pointcloud.pcd',
			// called when the resource is loaded
			function ( mesh ) {
				scene.add( mesh );
			},
			// called when loading is in progresses
			function ( xhr ) {
				console.log( ( xhr.loaded / xhr.total * 100 ) + '% loaded' );
			},
			// called when loading has errors
			function ( error ) {
				console.log( 'An error happened' );
			}
		);
		
		[example:webgl_loader_pcd]
		[page:LoadingManager manager] — The [page:LoadingManager loadingManager] for the loader to use. Default is [page:LoadingManager THREE.DefaultLoadingManager].
Creates a new [name].
See the base [page:Loader] class for common properties.
Default value is true.
See the base [page:Loader] class for common methods.
		[page:String url] — A string containing the path/URL of the .pcd file.
		[page:Function onLoad] — (optional) A function to be called after loading is successfully completed. The function receives loaded [page:Object3D] as an argument.
		[page:Function onProgress] — (optional) A function to be called while the loading is in progress. The argument will be the XMLHttpRequest instance, which contains [page:Integer total] and [page:Integer loaded] bytes.
		[page:Function onError] — (optional) A function to be called if an error occurs during loading. The function receives the error as an argument.
		
Begin loading from url and call onLoad with the parsed response content.
[page:Arraybuffer data] — The binary structure to parse.
[page:String url] — The file name or file url.
		Parse an pcd binary structure and return an [page:Object3D].
		The object is converted to [page:Points] with a [page:BufferGeometry] and a [page:PointsMaterial].
		
[link:https://github.com/mrdoob/three.js/blob/master/examples/js/loaders/PCDLoader.js examples/js/loaders/PCDLoader.js]