add LICENSE

README.md

@@ -200,3 +200,8 @@ Other Resources
 
 You may also be interested in Unbound (https://unboundtest.com), which is an entirely different project by someone else
 which is much more complete, written in go, and may be very useful for debugging and linting.
+
+LICENSE
+=======
+
+You may, at your option, use this software under the MIT and/or Apache-2.0 licenses.