BibiGun-improved

We solved question 5: Adding pause window.
We did it by creating object "PauseMenu" with inner two button "Resume" and "Main". we created script SubMainMenu.cs which change gameObjectd.activeSelf status.
In addition we added text "Esc to pause" by using "PauseText" object, which is hidded when "PauseMenu" is active.
We made changes to MyGameManager so it recognize "Esc" key press and activate "PauseMenu" object and hiding "PauseText"