Changing to add link to enable underline effect

remove-genesis-entry-title-link.php

<?php
/**
 * 
 * Remove Links from Post Titles in Genesis
 * 
 * @author Joshua Nelson
 * @link http://joshuadnelson.com
 * 
 */

add_filter( 'genesis_post_title_output', 'jdn_custom_post_title' );
function jdn_custom_post_title( $title ) {
	if( get_post_type( get_the_ID() ) == 'post' ) {
		$post_title = get_the_title( get_the_ID() );
		$title = '<h2 class="entry-title" itemprop="headline"><a href="entry-title">' . $post_title . '</a></h2>';
	}
	return $title;
}