added short license information to script

diff --git a/letsencrypt.sh b/letsencrypt.sh
index 377a0c19e9ce8cf7ecc3d9b44979ab811d20880d..e1edeab2210aef3e46738d1ff891f4742b11463b 100755 (executable)
--- a/letsencrypt.sh
+++ b/letsencrypt.sh
@@ -2,6 +2,8 @@
 
 # letsencrypt.sh by lukas2511
 # Source: https://github.com/lukas2511/letsencrypt.sh
+#
+# This script is licensed under The MIT License (see LICENSE for more information).
 
 set -e
 set -u