add comment about barcodes (#116)

application/controllers/Item_kits.php

@@ -176,6 +176,8 @@ class Item_kits extends Secure_area implements iData_controller
 			$barcode_config['barcode_type'] = 'Code128';
 		}
 		$data['barcode_config'] = $barcode_config;
+		
+		// display barcodes
 		$this->load->view("barcodes/barcode_sheet", $data);
 	}
 }