Add copyright and license.

juga0 · juga0 · commit 1af39b1e2cca · 2018-03-23T16:51:19.000Z
There should probably be an authors file too.
diff --git a/README.rst b/README.rst
@@ -111,3 +111,9 @@ Contact
 --------
 
 #bwscanner at irc.oftc.net
+
+License
+--------
+
+BWScanner is Copyright 2016, 2018 by its authors under the terms of the
+`GPLv2 <https://www.gnu.org/licenses/>`__ license.
