Add README.md

Author: dlarocque

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 # Firebase AI Sample App
+
+![Photo of the Firebase AI Sample App](images/screenshot.png)
+
+This sample application demonstrates features of the Firebase AI SDK for Web (`firebase/ai`), integrated into a web application build with React and TypeScript.
+
+For more information about the Firebase AI SDK, see the [Firebase AI Logic Docs](https://firebase.google.com/docs/vertex-ai).
+
+## Setup Instructions
+
+1. Create a project in the [Firebase Console](https://console.firebase.google.com), and enable Firebase AI.
+
+1. Update `src/config/firebase-config.ts` with your Firebase project configuration.
+
+1. Install dependencies:
+
+   ```bash
+   yarn
+   ```
+
+1. Start the development server:
+
+   ```bash
+   yarn dev
+   ```
+
+## Support
+
+- [Firebase Support](https://firebase.google.com/support/)
+
+## License
+
+© Google, 2025. Licensed under an [Apache-2](../LICENSE)