static void ShowPresentationWindow()
 {
     EditorApplication.update -= ShowPresentationWindow;
     //If the tutorial isn't done then open the window
     if (EditorPrefs.HasKey("TBS_DP") == false)
     {
         EditorPrefs.SetInt("TBS_DP", 1);
         TBS_PresentationWindow.InitializePresentationWindow();
         TBS_PresentationWindow.presentationWindow.Focus();
     }
 }
 public static void InitializePresentationWindow()
 {
     // Get existing open window or if none, make a new one:
     presentationWindow = (TBS_PresentationWindow)EditorWindow.GetWindowWithRect(typeof(TBS_PresentationWindow), new Rect(0, 0, 512, 600), true, "Package Presentation");
     presentationWindow.Show();
 }