add license header to php_sundown.h #35

Author: chobie

php_sundown.h

@@ -1,3 +1,21 @@
+/*
+   +----------------------------------------------------------------------+
+   | PHP Version 5                                                        |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 1997-2011 The PHP Group                                |
+   +----------------------------------------------------------------------+
+   | This source file is subject to version 3.01 of the PHP license,      |
+   | that is bundled with this package in the file LICENSE, and is        |
+   | available through the world-wide-web at the following url:           |
+   | http://www.php.net/license/3_01.txt                                  |
+   | If you did not receive a copy of the PHP license and are unable to   |
+   | obtain it through the world-wide-web, please send a note to          |
+   | [email protected] so we can mail you a copy immediately.               |
+   +----------------------------------------------------------------------+
+   | Authors: Shuhei Tanuma <[email protected]>                           |
+   +----------------------------------------------------------------------+
+ */
+
 #ifndef PHP_SUNDOWN_H
 
 #define PHP_SUNDOWN_H