add public method get_total_pages() to Pagination library

[neovive]

This method should provide public access to the $total_pages value.

public function get_total_pages()
{
   return $this->total_pages;
}

* perhaps, some of the other protected variables would be useful as well.

[Geert]

I'll add a magic get method, so you'll be able to access all pagination properties.

[Geert]

Fixed in r1905.