Update README.md

Author: DefinetlyNotAI

README.md

@@ -89,7 +89,10 @@ This project is ready to deploy on [Vercel](https://vercel.com) with just a few
 
 4. **Use default settings**
     - Vercel will auto-detect everything from `vercel.json`
-    - No need to configure anything manually
+    - No need to configure anything manually except ENV VARIABLES:
+         - `SECRET_KEY`: Flask Secret Key - Make this strong
+         - `DATABASE_URL`: Postgresql access URL - I recommend AIVEN
+         - `FLASK_ENV`: `production` or `development`, production is the default and is more secure using waitress to serve the application, SECURITY RISK
 
 5. **Deploy!**
     - Wait for the build to finish
@@ -230,4 +233,4 @@ Contributions are welcome! Please feel free to submit a Pull Request.
 
 ## License
 
-This project is licensed under the MIT License - see the LICENSE file for details.
+This project is licensed under the MIT License - see the LICENSE file for details.