Added skybox to webvr_daydream.

examples/webvr_daydream.html

@@ -62,8 +62,13 @@
 				info.innerHTML = '<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webvr - daydream';
 				container.appendChild( info );
 
+				var background = new THREE.CubeTextureLoader()
+					.setPath( 'textures/cube/MilkyWay/' )
+					.load( [ 'dark-s_px.jpg', 'dark-s_nx.jpg', 'dark-s_py.jpg', 'dark-s_ny.jpg', 'dark-s_pz.jpg', 'dark-s_nz.jpg' ] );
+				background.format = THREE.RGBFormat;
+
 				scene = new THREE.Scene();
-				scene.background = new THREE.Color( 0x505050 );
+				scene.background = background;
 
 				camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.1, 10 );