Update README.md

Author: igorpecovnik

README.md

@@ -10,3 +10,7 @@
 <a href=https://github.com/armbian/armbian.github.io/actions/workflows/directory-listing.yml><img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/armbian/armbian.github.io/directory-listing.yml?logo=githubactions&label=WWW%20publishing&style=for-the-badge&branch=main"></a> 
   <a href=https://github.com/armbian/armbian.github.io/actions/workflows/generate-base-files-info-json.yml><img alt="GitHub Workflow Status" src="https://img.shields.io/github/actions/workflow/status/armbian/armbian.github.io/generate-base-files-info-json.yml?logo=githubactions&label=Base%20files%20info&style=for-the-badge&branch=main"></a> 
 </p>
+
+## What does this project do?
+
+- Publish to <a href=https://github.armbian.com/>https://github.armbian.com/</a> what is put to `data` folder inside `data` repository.