Fix lint issues and some minor changes

examples/webvr_multiview.html

@@ -85,7 +85,7 @@
 
 				var geometry = new THREE.IcosahedronBufferGeometry( radius );
 
-				for ( var i = 0; i < 5000; i ++ ) {
+				for ( var i = 0; i < 20000; i ++ ) {
 
 					var object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: Math.random() * 0xffffff } ) );
 

src/renderers/WebGLRenderer.js

@@ -81,7 +81,7 @@ function WebGLRenderer( parameters ) {
 		 * Enables error checking and reporting when shader programs are being compiled
 		 * @type {boolean}
 		 */
-		checkShaderErrors: false
+		checkShaderErrors: true
 	};
 
 	// clearing

src/renderers/webgl/WebGLMultiview.js

@@ -52,7 +52,7 @@ function WebGLMultiview( renderer, gl, contextAttributes ) {
 
 	function isAvailable() {
 
-		return capabilities.multiview && !contextAttributes.antialias;
+		return capabilities.multiview && ! contextAttributes.antialias;
 
 	}