added boilerplate
diff --git a/programs/dibio.c b/programs/dibio.c
index 19188d7..a793669 100644
--- a/programs/dibio.c
+++ b/programs/dibio.c
@@ -1,26 +1,13 @@
-/*
- dibio - I/O API for dictionary builder
- Copyright (C) Yann Collet 2016
+/**
+ * Copyright (c) 2016-present, Yann Collet, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
- GPL v2 License
- 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.
-
- You can contact the author at :
- - zstd homepage : http://www.zstd.net/
-*/
/*-*************************************
* Includes