Replaced grid in mmd examples.

examples/webgl_loader_mmd.html

@@ -79,7 +79,7 @@
 
 				scene = new THREE.Scene();
 
-				var gridHelper = new THREE.GridHelper( 100, 100 );
+				var gridHelper = new THREE.PolarGridHelper( 30, 10 );
 				gridHelper.position.y = -10;
 				scene.add( gridHelper );
 

examples/webgl_loader_mmd_audio.html

@@ -79,7 +79,7 @@
 
 				scene = new THREE.Scene();
 
-				scene.add( new THREE.GridHelper( 100, 100 ) );
+				scene.add( new THREE.PolarGridHelper( 30, 10 ) );
 
 				var ambient = new THREE.AmbientLight( 0x666666 );
 				scene.add( ambient );