Generate an RSS feed for your Notion site.

Prerequisite: the articles/posts needs to be in a Notion database.

1. Create a Notion integration in http://notion.so/profile/integrations
2. Go to the Notion database -> click ••• from top right -> Connections -> Connect to, select the integration from last step
3. Fork this val
4. Set up your NOTION_DATABASE_ID and NOTION_API_TOKEN in: https://www.val.town/settings/environment-variables
5. Update the code to customize with your database properties (look out for "Customize based on your database")
6. Share the RSS url