add plugin url and license

batch.php

@@ -5,8 +5,29 @@
  * Version: 0.1.0
  * Author: Igor V Belousov
  * Author URI: http://belousovv.ru/
+ * Plugin URI: https://github.com/IgorVBelousov/batch_operations/wiki
+ * License: GPLv2 or later
  */
 
+/*
+Copyright (C)  2015 Igor V Belousov
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+
+
 // Add backend page without menu item
 add_action( 'admin_menu', 'batch_operations_add_page' );