GUI and Game Start

-create a GUI and a manager that uses it
-Game Over Text
- Instructions Text
-Runner Text
-reate a C# script named GUIManager in the Managers folder
-Start method to our new manager and use it to disable gameOverText s
-Update method that checks whether a jump button was pressed, and if so
triggers the game-start event.
-method to handle our game-start event:GameStart
-nforming our event manager that it should call the GameStart method of
our manager object, whenever the game-start event is triggered. adding
our method to the event in the Start method.