Update README.md

Change production-readiness statement.

narwhal/README.md

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 [![rustc](https://img.shields.io/badge/rustc-1.51+-blue?style=flat-square&logo=rust)](https://www.rust-lang.org)
 [![license](https://img.shields.io/badge/license-Apache-blue.svg?style=flat-square)](LICENSE)
 
-This repo provides an implementation of [Narwhal and Tusk](https://arxiv.org/pdf/2105.11827.pdf), a [DAG](https://en.wikipedia.org/wiki/Directed_acyclic_graph)-based mempool and efficient [BFT](https://en.wikipedia.org/wiki/Byzantine_fault) consensus. The codebase has been designed to be small, efficient, and easy to benchmark and modify. It has not been designed to run in production but uses real cryptography ([dalek](https://doc.dalek.rs/ed25519_dalek)), networking ([tokio](https://docs.rs/tokio)), and storage ([rocksdb](https://docs.rs/rocksdb)).
+This repo provides an implementation of [Narwhal and Tusk](https://arxiv.org/pdf/2105.11827.pdf), a [DAG](https://en.wikipedia.org/wiki/Directed_acyclic_graph)-based mempool and efficient [BFT](https://en.wikipedia.org/wiki/Byzantine_fault) consensus. The codebase has been designed to be small, efficient, and easy to benchmark and modify. We're still working on making the project ready for production, but already uses real cryptography ([ed25519-](https://doc.dalek.rs/ed25519_dalek) & other signing schemes), networking ([tokio](https://docs.rs/tokio)), and storage ([rocksdb](https://docs.rs/rocksdb)).
 
 ## Quick Start
 The core protocols are written in Rust, but all benchmarking scripts are written in Python and run with [Fabric](http://www.fabfile.org/).