added App which does basic init/startup

hxd/App.hx

@@ -0,0 +1,39 @@
+package hxd;
+
+class App {
+	
+	var engine : h3d.Engine;
+	var s3d : h3d.scene.Scene;
+	var s2d : h2d.Scene;
+	
+	public function new() {
+		engine = new h3d.Engine();
+		engine.onReady = setup;
+		engine.init();
+	}
+	
+	function setup() {
+		s3d = new h3d.scene.Scene();
+		s2d = new h2d.Scene();
+		s3d.addPass(s2d);
+		init();
+		hxd.Timer.skip();
+		loop();
+		hxd.System.setLoop(loop);
+		hxd.Key.initialize();
+	}
+	
+	function init() {
+	}
+	
+	function loop() {
+		hxd.Timer.update();
+		s2d.checkEvents();
+		update(hxd.Timer.tmod);
+		engine.render(s3d);
+	}
+	
+	function update( dt : Float ) {
+	}
+	
+}