Add the license

COPYING

@@ -0,0 +1,14 @@
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+                    Version 2, December 2004
+
+ Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>
+
+ Everyone is permitted to copy and distribute verbatim or modified
+ copies of this license document, and changing it is allowed as long
+ as the name is changed.
+
+            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. You just DO WHAT THE FUCK YOU WANT TO.
+

nldecap.py

@@ -2,6 +2,12 @@
 # -*- coding: utf-8 -*-
 # pylint: disable=locally-disabled,invalid-name
 # FIXME endianness issues (probably)
+
+# Copyright © 2017 Étienne Noss
+# This work is free. You can redistribute it and/or modify it under the
+# terms of the Do What The Fuck You Want To Public License, Version 2,
+# as published by Sam Hocevar. See http://www.wtfpl.net/ for more details.
+
 """Parse pcaps containing rtnetlink messages and display them.
 
 These pcaps are typically obtained by capturing on a nlmon interface.