[RFC] Added data-pagination to view output. 

The data attribute is a json_encoded array of the following:

* url
* totalResults
* totalPages
* currentPage
* currentPageOffsetStart
* currentPageOffsetEnd

Builds on top off PR #91

Is this something that interests anyone?

This update makes it easier to add other JS hooks / events. I'm currently using it to build a perPage select box:

![image](https://f.cloud.github.com/assets/25124/510474/8096a0a8-bdd5-11e2-8388-3e75088b9d50.png)

The method in my widget looks like:

````js
        _processPerPage: function (event) {

            event.preventDefault();

            var paginationData = this.element.find(this.options.paginationSelector).data('pagination'),
                currentOffset = paginationData.currentPageOffsetStart,
                perPage = $(event.target).val(),
                newPage = Math.ceil(currentOffset / perPage),
                uri = new URI(paginationData.url);

            uri.setSearch(this.options.pageKey, newPage);
            uri.setSearch(this.options.perPageKey, perPage);

            $.ajax({
                type: 'get',
                url: uri.href(),
                beforeSend: $.proxy(this._beforeSend, this),
                success: $.proxy(this._success, this),
                complete: $.proxy(this._complete, this)
            });

        },
````