Add fxa-client-ios to readme

README.md

@@ -10,5 +10,6 @@
 
 ### Other Resources
 
+* [fxa-client-ios](https://github.com/eoger/fxa-client-ios) - an iOS framework that exposes `fxa-rust-client`.
 * [mentat](https://github.com/mozilla/mentat) - a persistent, relational store inspired by Datomic and DataScript.
 * [sync-server](https://github.com/mozilla-services/syncserver) - an all-in-one package for running a self-hosted Firefox Sync server.