Added the seventh Button to the GUI

src/main/java/game/StartTicTacToeGame.java

@@ -80,6 +80,12 @@ public class StartTicTacToeGame implements ActionListener{
 		button6.setBounds(500, 250, 100,100);
 		button6.addActionListener(this);
 		gui.Frame.add(button6);
+		
+		button7 = new JButton();
+		button7.setBackground(Color.white);
+		button7.setBounds(200, 400, 100,100);
+		button7.addActionListener(this);
+		gui.Frame.add(button7);
 	}