functions.php

/** Add rel="next" and rel="prev" to Genesis Framework **/
function custom_post_navigation()
{
?>
    <div class="prev-next">
        <div class="nav-prev">
            <?php previous_post_link('%link', '%title'); ?>
         </div>
        <div class="nav-next">
            <?php next_post_link('%link', '%title'); ?>
        </div>
    </div>
<?php
}
add_action('genesis_before_comments', 'custom_post_navigation');