Clean up.

examples/files.js

@@ -166,6 +166,7 @@ var files = {
 		"webgl_materials_parallaxmap",
 		"webgl_materials_reflectivity",
 		"webgl_materials_shaders_fresnel",
+		"webgl_materials_sheen",
 		"webgl_materials_skin",
 		"webgl_materials_standard",
 		"webgl_materials_texture_anisotropy",
@@ -185,7 +186,6 @@ var files = {
 		"webgl_materials_video",
 		"webgl_materials_video_webcam",
 		"webgl_materials_wireframe",
-		"webgl_materials_sheen",
 		"webgl_math_orientation_transform",
 		"webgl_mirror",
 		"webgl_modifier_simplifier",