Add root readme info

Signed-off-by: Steve Lasker <stevenlasker@hotmail.com>

Author: SteveLasker

README.md

@@ -1 +1,14 @@
-# nv2
+# Notary V2 (nv2)
+
+nv2 will eventually become a set of reference implementations for signing and verifying [OCI Artifacts][artifacts-repo].
+
+Currently, it hosts prototypes to validate the scenarios outlined in [notaryproject/requirements](https://github.com/notaryproject/requirements/blob/main/scenarios.md#scenarios).
+
+## Table of Contents
+
+1. [Notary v2 Home][notaryv2-home]
+1. [Prototype 1][prototype-1] - signing and verifying OCI artifacts, using signatures persisted as OCI Indexes.
+
+[artifacts-repo]:   https://github.com/opencontainers/artifacts
+[prototype-1]:      https://github.com/notaryproject/nv2/tree/prototype-1
+[notaryv2-home]:    https://github.com/notaryproject/requirements