Add dev only note

README.md

@@ -1,6 +1,8 @@
 ## fxa-local-dev [![Build Status](https://travis-ci.org/mozilla/fxa-local-dev.svg?branch=master)](https://travis-ci.org/mozilla/fxa-local-dev) ![](https://img.shields.io/badge/tested_on-OS%20X%20and_Ubuntu-brightgreen.svg)
 > An easy way to contribute to Firefox Accounts. If you have issues please ask in `#fxa` on Mozilla IRC.
 
+> ⚠️ **NOTE:  Do not use this project in production, this is only for local development.**
+
 ### Getting Started
 
 1. **Manually install the system [dependencies](#dependencies) for OS X or Ubuntu.**