Added refresh option to reinitialize the plugin on each update when used to paginate search results dynamically updated with AJAX.

When paginating search results returned from an AJAX call...

    $('#search').keyup(function() {
        var search = $(this).val();
        $.get('/search', {search : search}, function(results) {
            $('.scroll-table').html(results);
            $('.scroll-table').jscroll();
        });
    });

After getting the new set of search results, when we scroll to the bottom, jScroll appends content of the next page of the previous (old) query.

So if my last _nextHref was "/search?query=A&page=3" and I enter B in the search field, instead of loading "/search?query=B&page=2" from the new href, it would load "/search?query=A&page=3" from the old href.

Refresh option added to reinitialize the plugin on each load, to prevent it from loading the old href.

Usage: 

    $('.scroll').jscroll({
        refresh: true
    });