Ends your Flash application.
First available in version 3.0 build 2039.
No output parameters.
This method can only be called asynchronously.
To force the application to shut down once your onQuit handler is finished, you will have to use App.forceQuit.
App.quit and the Quit FSCommand do nothing if they are called from inside an onQuit handler.
Calling App.forceQuit from outside an onQuit handler will bypass the onQuit handler and cause the application to terminate immediately