Update README.md to include info about the host-from-root branch

README.md

@@ -37,6 +37,10 @@ pages:
   - master
 ```
 
+The above example expects to put all your HTML files in the `public/` directory.
+To use the files in the root directory, see the `host-from-root` branch
+https://gitlab.com/pages/plain-html/blob/host-from-root/.gitlab-ci.yml.
+
 ## GitLab User or Group Pages
 
 To use this project as your user/group website, you will need one additional