Update WebGLRenderer.html

docs/api/renderers/WebGLRenderer.html

@@ -68,7 +68,7 @@
 
 		<div>Defines whether the renderer should sort objects. Default is true.</div>
 
-		<div>TODO</div>
+		<div>Note: Sorting is used to attempt to properly render objects that have some degree of transparency.  By definition, sorting objects may not work in all cases.  Depending on the needs of application, it may be neccessary to turn off sorting and use other methods to deal with transparency rendering e.g. manually determining the object rendering order.</div>
 
 
 		<h3>.[page:Boolean autoUpdateObjects]</h3>