__Release 1__
- After application launch, the application shows a screen with 9 empty game buttons
- When the user clicks the first game button, it shows an X.
- When the user clicks a second game button, it shows an O.
- When the user clicks a third game button, it shows an X again.
- After a game button has been clicked, this button can not be clicked again.

	__Release 2__
- After application launch the application shows a label showing whose players turn it is
- After a game button has been clicked, the active player switches
- After a second game button has been clicked, the player pressing the first button is the active player

	__Release 3__
- After a game button is pressed, the application checks whether one of the players has won the game
- If a player has won the game, this is shown in the label

	__Release 4__
- The view contains a button "Reset" to reset the game
- When the reset button is clicked, the game buttons are empty and it's the first players turn again
- When a player wins the game, the buttons causing the user to win are marked red