Added the ninth Button to the GUI

src/main/java/game/StartTicTacToeGame.java

@@ -92,6 +92,12 @@ public class StartTicTacToeGame implements ActionListener{
 		button8.setBounds(350, 400, 100,100);
 		button8.addActionListener(this);
 		gui.Frame.add(button8);
+		
+		button9 = new JButton();
+		button9.setBackground(Color.white);
+		button9.setBounds(500, 400, 100,100);
+		button9.addActionListener(this);
+		gui.Frame.add(button9);
 	}