filedmanager group with a repeatable field

gistfile1.txt

		public function init() {
			$fm = new Fieldmanager_Group( array(
				'name'     => 'fs_team_fields',
				'children' => array(
					'fs_ad_module' => new Fieldmanager_TextArea( 'Hello' ),
					'repeatabletext' => new Fieldmanager_Textfield( 'Goodbye', array(
						'limit'          => 0,
						'add_more_label' => 'Add another field',
						'sortable'       => true,
						'label'          => 'Text Field'
					) )
				)
			) );
			$fm->add_meta_box( 'Single-Level Group', 'fs_team' );
		}