Add custom href for links - this supports forms with post method:

        pagination = Pagination(page=
                                                    per_page=
                                                    total=,
                                                    href='javascript:change_page({0})')

JS function wil change page and submit form
Merge pull request #15 from ilya-il/master

Add custom href for links.
Merge it although I don't know how to use it, :(