added light exampple

examples/spotlightExample.js

@@ -0,0 +1,37 @@
+//
+//  spotlightExample.js
+//  examples
+//
+//  Created by Brad Hefta-Gaub on 10/28/14.
+//  Copyright 2014 High Fidelity, Inc.
+//
+//  This is an example script that demonstrates creating and editing a particle
+//
+//  Distributed under the Apache License, Version 2.0.
+//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
+//
+
+var lightProperties = {
+    type: "Light",
+    position: { x: 0, y: 0, z: 0 },
+    dimensions: { x: 1000, y: 1000, z: 1000 },
+    angularVelocity: { x: 0, y: 10, z: 0 },
+    angularDamping: 0,
+
+    isSpotlight: true,
+    diffuseColor: { red: 255, green: 255, blue: 255 },
+    ambientColor: { red: 255, green: 255, blue: 255 },
+    specularColor: { red: 255, green: 255, blue: 255 },
+
+    constantAttenuation: 1,
+    linearAttenuation: 0,
+    quadraticAttenuation: 0,
+    exponent: 0,
+    cutoff: 180, // in degrees
+};
+
+var spotlightID = Entities.addEntity(lightProperties);
+
+Script.scriptEnding.connect(function() {
+    Entities.deleteEntity(spotlightID);
+});