Update README.md

Author: SableRaf

README.md

@@ -3,5 +3,19 @@ This repository automatically generates the Javadoc for Processing 4 and hosts i
 
 👉 https://processing.github.io/processing4-javadocs/
 
+## Automated Javadocs Deployment
+
+This repository uses a custom GitHub Actions workflow [`build-and-deploy-javadoc.yml`](https://github.com/processing/processing4-javadocs/blob/gh-pages/.github/workflows/build-and-deploy-javadoc.yml) to automatically generate and updates Javadocs in the `/docs` folder.
+
+### How It Works
+
+- **Scheduled Run:** The workflow is triggered every Monday at midnight (UTC) to ensure that the Javadocs are always up-to-date.
+- **Manual Trigger:** You can also manually trigger the workflow if needed.
+- **Javadocs Generation:** The workflow clones the `processing/processing4` repository, builds the Javadocs using `ant`, and copies the generated files to the `/docs` directory of this repository.
+- **Update Source Files:** The updated Javadocs are committed and pushed to the `gh-pages` branch.
+- **Deployment:** We've set "Deploy from branch" in the repo settings to trigger on push to the `gh-pages` branch.
+
+This automation helps keep the Javadocs updated without requiring manual intervention.
+
 ## License
 The Processing 4 reference is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License ([CC-BY-NC-SA-4.0](https://creativecommons.org/licenses/by-nc-sa/4.0/)).