Updated readme to add deprecated notice

README.md

@@ -1,9 +1,11 @@
-# Plonky Edge block trace parser
+# Plonky Edge block trace parser (Deprecated)
 
 This is a simple library dedicated to parsing [Polygon Edge](https://github.com/0xPolygon/polygon-edge) block traces into a format usable for txn proof generation within [plonky2](https://github.com/0xPolygonZero/plonky2) (and later also [plonky3](https://github.com/Plonky3)).
 
 Note that at the time of writing  support for Edge block traces are currently not stable and only available on the `feat/zero` branch.
 
+Note: We are currently in the process of switching over to a generic [proof payload protocol](https://github.com/0xPolygonZero/proof-protocol-decoder), and development has halted on this repo.
+
 ## License
 
 Licensed under either of