message: Mark methods with override in MainMenuState
diff: @@ -18,11 +18,11 @@ class MainMenuState : public NAS2D::State
  {
  public:
  MainMenuState();
  - virtual ~MainMenuState();
  + ~MainMenuState() override;
  protected:
  - void initialize();
  - State* update();
  + void initialize() override;
  + State* update() override;
  private:
  void onKeyDown(NAS2D::EventHandler::KeyCode key, NAS2D::EventHandler::KeyModifier mod, bool repeat);
  