Add gamma configuration to BasisTextureLoader example

examples/webgl_loader_texture_basis.html

@@ -52,6 +52,8 @@
 				renderer = new THREE.WebGLRenderer( { antialias: true } );
 				renderer.setPixelRatio( window.devicePixelRatio );
 				renderer.setSize( window.innerWidth, window.innerHeight );
+				renderer.gammaOutput = true;
+				renderer.gammaFactor = 2.2;
 				document.body.appendChild( renderer.domElement );
 
 				camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 2000 );