Removed the need for a quit handler

examples/draw/main.go

@@ -29,7 +29,6 @@ func main () {
 	application.OnPress(onPress)
 	application.OnRelease(onRelease)
 	application.OnMouseMove(onMouseMove)
-	application.OnQuit(onQuit)
 	
 	err = application.Run()
 	if err != nil { panic(err) }
@@ -56,7 +55,3 @@ func onMouseMove (x, y int) {	if mousePressed {
 		application.Draw()
 	}
 }
-
-func onQuit () {
-	os.Exit(0)
-}