kc3-lang/kc3

diff --git a/bin/header.exs b/bin/header.exs
index 2c46dac..5aac5aa 100644
--- a/bin/header.exs
+++ b/bin/header.exs
@@ -1,3 +1,16 @@
+## c3
+## Copyright 2022 kmx.io <contact@kmx.io>
+##
+## Permission is hereby granted to use this software granted
+## the above copyright notice and this permission paragraph
+## are included in all copies and substantial portions of this
+## software.
+##
+## THIS SOFTWARE IS PROVIDED "AS-IS" WITHOUT ANY GUARANTEE OF
+## PURPOSE AND PERFORMANCE. IN NO EVENT WHATSOEVER SHALL THE
+## AUTHOR BE CONSIDERED LIABLE FOR THE USE AND PERFORMANCE OF
+## THIS SOFTWARE.
+
 defmodule Header.C do
   def split(src) do
     split(src, "")