add copyright notice

workshop.rst

@@ -1,3 +1,11 @@
+..
+  Copyright 2015, 2016  Red Hat, Inc.
+
+  This work is licensed under the Creative Commons Attribution 4.0
+  International License. To view a copy of this license, visit
+  http://creativecommons.org/licenses/by/4.0/.
+
+
 Introduction
 ============