added information alert

src/window.cs

@@ -3,6 +3,10 @@ using System;
 
 public partial class window : Node
 {
+	public override void _Ready()
+    {
+        OS.Alert("Make sure that you either capture your mouse or play with a gamepad. Jump with space or bottom gamepad face button. Remove this message in window.cs - vaporvee.com","Information");
+    }
 	public override void _Process(double delta)
 	{
 		if (Input.IsActionJustPressed("fullscreen"))