Add simple post nav to single posts in a genesis theme

genesis-post-nav

/** Add Post Nav to Single Posts */
add_action ('genesis_after_post_content', 'post_navigation');
function post_navigation() {
  if ( is_single() ) {
		echo '<div class="post-nav">'; 
			previous_post_link('<div class="previous-post">Previous Post: %link</div>');
			next_post_link('<div class="next-post">Next Post: %link</div>');
		echo '</div>';
	}
}