As Undo notes, answers that do nothing but link to external sites are discouraged: links break, making the answers useless, and it becomes extra-difficult to critique, update or enhance answers that exist outside of our system and license constructs.
That said, deleting just your answer was a bit unfair; there were two other answers that ended up being pretty much the same thing - one of which actually does link to a page that's on its way out.
Realistically, the question should've just been closed. Since it now has been, I've undeleted your answer... If you can find a way to restructure the question to discourage the posting of links (and, of course, update your own answer to consist of more than just a link), it could be re-opened; otherwise, it'll eventually be removed.