transfer smoothscroll to use npm autoupdate
transfer smoothscroll to use npm autoupdate

cc @galambalazs, close #6476

viskin/cdnjs,viskin/cdnjs,viskin/cdnjs,dhenson02/cdnjs,viskin/cdnjs,dhenson02/cdnjs,viskin/cdnjs,dhenson02/cdnjs,dhenson02/cdnjs