Added forgotten SpotLight.js

src/lights/SpotLight.js

+/**
+ * @author alteredq / http://alteredqualia.com/
+ */
+
+THREE.SpotLight = function ( hex, intensity, distance, castShadow ) {
+
+	THREE.Light.call( this, hex );
+
+	this.position = new THREE.Vector3( 0, 1, 0 );
+	this.target = new THREE.Object3D();
+
+	this.intensity = intensity || 1;
+	this.distance = distance || 0;
+
+	this.castShadow = castShadow !== undefined ? castShadow : false;
+
+};
+
+THREE.SpotLight.prototype = new THREE.Light();
+THREE.SpotLight.prototype.constructor = THREE.SpotLight;