feat: Add instructions for initializing remote database and adding ad…

…min users

This commit adds instructions to the README.md file for initializing the remote database and adding admin users. It provides step-by-step guidance on cloning the forked repository, installing dependencies, and running commands to initialize the remote database. Additionally, it includes a screenshot of the Astro DB ADMINS table for reference. These instructions enhance the usability of the project and help users get started quickly.

README.md

@@ -49,7 +49,10 @@ SLACK_CLIENT_ID=xxxxxxxxxx.xxxxxxxxxxxxx
 SLACK_CLIENT_SECRET=55f7xxxxxxxxxxxxxxxxxxxxxxxxxxxx
 SLACK_SIGNING_SECRET=d597xxxxxxxxxxxxxxxxxxxxxxxxxxxx
 ```
-5. Have fun!
+6. Clone the forked repository and run `bun install` then `bun astro db login && bun astro db link && bun astro db push` to init the remote database
+7. Once the netlify site has been built and deployed succesfully then go to the Astro DB you created and add your admin users to the db in the `ADMINS` table:
+![Screenshot of Astro DB ADMINS Table](/.github/images/admins-table.png)
+8. Have fun!
 
 ## Integration && Use
 The api is very simple to subscribe someone to the newsletter then simply make a post request to your site at /api/subscribe and include the name and email via a json body e.g