Update README.md

README.md

@@ -51,22 +51,26 @@ You can easily convert the Markdown files using various online and offline tools
 
 ### mkdocs
 
-To create a simple website with the documentation, you can use [mkdocs](https://www.mkdocs.org/user-guide/deploying-your-docs/)
+To create a simple website with the documentation, you can use [mkdocs](https://www.mkdocs.org/user-guide/deploying-your-docs/).
 
-Run:
+To prepare, install [Python 3](https://www.python.org/downloads/) and [pip](https://pip.pypa.io/en/stable/installation/) and run:
+
+```
+pip3 install -r requirements.txt
+```
+
+Then run a local live server:
 
 ```sh
 mkdocs serve
 ```
 
-to run a local live server or:
+or build the site:
 
 ```sh
 mkdocs build
 ```
 
-to build the site.
-
 You can [publish](https://www.mkdocs.org/user-guide/deploying-your-docs/) to GitHub Pages, Read the Docs or any web server.
 
 You can also upload the result to GitLab Pages by using the [.gitlab-ci.yml](.gitlab-ci.yml) in this repository.