Update READMEs for payjoin-ffi

Author: spacebear21

README.md

@@ -38,6 +38,10 @@ The [`payjoin-directory`](https://github.com/payjoin/rust-payjoin/tree/master/pa
 
 The [`payjoin-test-utils`](https://github.com/payjoin/rust-payjoin/tree/master/payjoin-test-utils) crate provides commonly used testing fixtures such as a local OHTTP relay and payjoin directory, bitcoind node and wallets, and official test vectors.
 
+### `payjoin-ffi`
+
+The [`payjoin-ffi`](https://github.com/payjoin/rust-payjoin/tree/master/payjoin-ffi) crate provides language bindings that expose the Rust-based Payjoin implementation to various programming languages.
+
 ### Disclaimer ⚠️ WIP
 
 **Use at your own risk. This crate has not yet been reviewed by independent Rust and Bitcoin security professionals.**

payjoin-ffi/README.md

@@ -1,10 +1,10 @@
 # Payjoin Language Bindings
 
-Welcome! This repository creates libraries for various programming languages, all using the Rust-based [Payjoin](https://github.com/payjoin/rust-payjoin) as the core implementation of BIP-78, sourced from the [Payjoin Dev Kit](https://payjoindevkit.org/).
+Welcome! This repository creates libraries for various programming languages, all using the Rust-based [Payjoin](https://github.com/payjoin/rust-payjoin) as the core implementation of BIP-77, sourced from the [Payjoin Dev Kit](https://payjoindevkit.org/).
 
 Our mission is to provide developers with cross-language libraries that seamlessly integrate with different platform languages. By offering support for multiple languages, we aim to enhance the accessibility and usability of Payjoin, empowering developers to incorporate this privacy-enhancing feature into their applications, no matter their preferred programming language.
 
-With a commitment to collaboration and interoperability, this repository strives to foster a more inclusive and diverse ecosystem around Payjoin and BIP-78, contributing to the wider adoption of privacy-focused practices within the Bitcoin community. Join us in our mission to build a more private and secure future for Bitcoin transactions through Payjoin and BIP-78!
+With a commitment to collaboration and interoperability, this repository strives to foster a more inclusive and diverse ecosystem around Payjoin, contributing to the wider adoption of privacy-focused practices within the Bitcoin community. Join us in our mission to build a more private and secure future for Bitcoin transactions through Payjoin!
 
 **Current Status:**
 This project is in the pre-alpha stage and currently in the design phase. The first language bindings available will be for Python, followed by Swift and Kotlin. Our ultimate goal is to provide Payjoin implementations for Android, iOS, Java, React, Python Native, Flutter, C#, and Golang.