Add a mobile responsive menu to a Genesis Child Theme - Add to functions.php

functions.php

<?php
//* Require Child Theme Functions
require_once( CHILD_DIR . '/lib/theme-js.php' );

add_action( 'genesis_header_right', 'prefix_mobile_menu_toggle', 5 );
/**
 * Add a mobile menu toggle element
 * to expand and collapse a mobile menu.
 *
 * @author FAT Media
 * @link http://youneedfat.com/genesis-responsive-design-menu/
 *
 */
function prefix_mobile_menu_toggle() {
	echo '<div class="menu-toggle">';
		echo '<span><a href="#">' . __( 'Menu', 'text-domain' ) . '</a></span>';
	echo '</div>';
}