Update README.md

Author: jeffreylanters

README.md

@@ -45,24 +45,29 @@ It's recommended to build your entire project around these life cycle methods.
 Basic example usage of some of the ECS features.
 
 ```cs
-public class MainController : Controller {
-  public override void OnInitialize () {
-    this.Register (typeof (EnemySystem));
+public class MainController: Controller {
+  public override void OnInitialize() {
+    this.Register (typeof(EnemySystem, typeof(AiSystem), typeof(AudioService));
   }
 }
 
-public class EnemyComponent : EntityComponent<EnemyComponent, EnemySystem> {
+public class EnemyComponent: EntityComponent<EnemyComponent, EnemySystem> {
   [Referenced] public BoxCollider collider;
   [Protected] public int level;
 
   public float speed;
 }
 
-public class EnemySystem : EntitySystem<EnemySystem, EnemyComponent> {
+public class EnemySystem: EntitySystem<EnemySystem, EnemyComponent> {
   [Injected] public AiSystem aiSystem;
   [Injected] public AudioService AudioService;
+  
+  public override void OnEntityInitialized(EnemyComponent entity) {
+    if (entity.level > 5)
+      entity.speed *= 2;
+  }
 
-  public override void OnUpdate () {
+  public override void OnUpdate() {
     var _delta = Time.deltaTime;
     foreach (var _entity in this.entities)
       _entity.AddPosition(_delta * _entity.speed, 0, 0);