adds html option

This pull requests implements https://github.com/amatsuda/kaminari/pull/417#issuecomment-39007349 and adds tests as requested by https://github.com/amatsuda/kaminari/pull/417#issuecomment-20948295:

* Add html option that will be passed to any link tags(following form_for's convension)

    paginate @users, html: {remote: true, class: 'ajax_index', data: {pjax: true} }

Are you sure you still want to deprecate the remote (Ajax) option?