Add GPL2 license reminder where appropriate

1 files changed, 5 insertions, 1 deletions

diff --git a/index.c b/index.c
index c9be11b..b92828e 100644
--- a/index.c
+++ b/index.c
@@ -1,4 +1,8 @@
-/* *************************************************************** */
+/* ########################################################### */
+/* This Software is licensed under the GPL licensed Version 2, */
+/* please read http://www.gnu.org/copyleft/gpl.html            */
+/* ########################################################### */
+
 /* Ternary Search Tree and sorted array creation functions         */
 /* Inspired by: https://www.cs.princeton.edu/~rs/strings/tstdemo.c */
 /* *************************************************************** */