Get the data out of a repeatable group using the Custom Meta Boxes script from Humanmade

display-repeatable-group-cmb.php

<?php
/**
* Display a repeatable group using the humanmade
* Custom Meta Boxes script
*
* @author FAT Media <http://youneedfat.com>
* @copyright Copyright (c) 2013, FAT Media, LLC
* @license GPL-2.0+
*/
// Get all the post's custom metadata
$repeatable_group = get_post_custom( get_the_ID() );
// Get the fields of the group you need
$fields = $repeatable_group['the_group_name'];
// Loop through the fields and uneseralize them
foreach ( $fields as $field ) {
	$rpt = unserialize( $field );
	$some_field = $rpt['the_field_name'];
	$another_field = $rpt['another_field_name'];
}