Updated WebGLRenderer docs about shadowmap types.

docs/api/renderers/WebGLRenderer.html

@@ -112,7 +112,8 @@
 
 		<h3>.[page:Integer shadowMapType]</h3>
 
-		<div>Default is THREE.PCFShadowMap. TODO</div>
+		<div>Defines shadow map type (unfiltered, percentage close filtering, percentage close filtering with bilinear filtering in shader)</div>
+		<div>Options are THREE.BasicShadowMap, THREE.PCFShadowMap, THREE.PCFSoftShadowMap. Default is THREE.PCFShadowMap.</div>
 
 
 		<h3>.[page:Boolean shadowMapCullFrontFaces]</h3>