Update README.md

Add communication protocol

README.md

@@ -13,6 +13,7 @@ Please do not submit PR with pseudo currencies, cryptocoins, NFTs, DAOs and fina
 ### Communication
 * [ForgeFed](https://github.com/forgefed/forgefed) - a decentralized federation protocol provides a server to server API for pull request, forking and subscription.
 * [Matrix](https://matrix.org/) - an open standard for decentralised persistent communication over IP. Matrix wants to connect together all the various communication services and make them interoperate.
+* [Nostr](https://nostr.com/) -  A decentralized social network with a chance of working. A simple, open protocol that enables a truly censorship-resistant and global social network.
 * [Scuttlebutt](https://www.scuttlebutt.nz/) - a decent(ralised), offline-friendly secure gossip protocol.
 
 ### Data