Update AxisHelper.html

docs/api/extras/helpers/AxisHelper.html

@@ -10,14 +10,19 @@
 		<h1>[name]</h1>
 
 		<div class="desc">todo</div>
+		<h2>Example</h2>
 
+                <code>
+                	var axisHelper = new THREE.AxisHelper(5);
+			scene.add( axisHelper );
+                </code>
 
 		<h2>Constructor</h2>
 
 
 		<h3>[name]([page:todo size])</h3>
 		<div>
-		size -- todo
+		size -- Define the size of the helper
 		</div>
 		<div>
 		todo