Added introduction, architecture section

Updated license header on new files.

Change-Id: Ic44db303ab935099698f8c6547904802381fce5c
diff --git a/release/1.0.rst b/release/1.0.rst
index b4abdf4..222c393 100644
--- a/release/1.0.rst
+++ b/release/1.0.rst
@@ -1,3 +1,7 @@
+..
+   SPDX-FileCopyrightText: © 2020 Open Networking Foundation <support@opennetworking.org>
+   SPDX-License-Identifier: Apache-2.0
+
 SD-Core 1.0 Release
 ===================