> Use delegate as the replacement

Actually, use the new `#on` as replacement: it can handle the job of `#bind` and `#delegate` (and `#live` of course), so I'd fully expect it to be the only one remaining in the fullness of time.

Warning: the first two arguments are reversed compared to `#delegate`:

    $(document).delegate("#foo", "click", function() { });

becomes

    $(document).on("click", "#foo", function() { });