Add project discontinuation notice to README

Added notice about project discontinuation and lack of support from Intel.

Author: rdower

README.rst

@@ -2,6 +2,15 @@
 ..
 .. SPDX-License-Identifier: BSD-3-Clause
 
+## DISCONTINUATION OF PROJECT.
+
+This project will no longer be maintained by Intel.
+
+Intel will not provide or guarantee development of or support for this project, including but not limited to, maintenance, bug fixes, new releases or updates. Patches to this project are no longer accepted by Intel. If you have an ongoi>
+
+Contact: [email protected]
+
+
 ===================
  Distributed Ranges
 ===================