URL: mysite.com/category_listing CRUMBS: Home > Categorys
URL: mysite.com/category CRUMBS: Home > CategorysListing > Category
URL: mysite.com/category/item CRUMBS: Home > CategorysListing > Category > Item
$config['replace'] = array('category' => array('category_listing' => Categorys, 'category' => 'Category'));