badges on landing page

Author: parmentelat

README.md

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 a collection of exercises, TPs and miscell pedagogical material for practising programing in Python.
 
-published as a Jupyter book at
-<flotpython-exos-python.readthedocs.io>
+[![Published](https://img.shields.io/badge/Published-Website-green)](https://python-exos.info-mines.paris)

notebooks/README.md

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 # flotpython exos: pure Python
 
+[![Published](https://img.shields.io/badge/Published-Website-green)](https://python-exos.info-mines.paris)
+[![MyST Build Status](https://img.shields.io/github/actions/workflow/status/flotpython/exos-python/myst-to-pages.yml?branch=main&label=MyST%20Build%20Status)](https://github.com/flotpython/exos-python/actions/workflows/myst-to-pages.yml)
+[![GitHub Repo](https://img.shields.io/badge/GitHub-Repository-blue?logo=github)](https://github.com/flotpython/exos-python)
+<!-- [![Open in Codespaces](https://img.shields.io/badge/Open%20in-Codespaces-blue?logo=github)](https://github.com/codespaces/new?hide_repo_select=true&ref=main&repo=ue12-p25%2Fnumerique) -->
+
+[![License: CC BY-NC-ND](https://img.shields.io/badge/License-CC%20BY--NC--ND-lightgrey.svg)](https://creativecommons.org/licenses/by-nc-nd/4.0/) *Thierry Parmentelat*
+
 this repo contains exercises and TPs that [complement the Python MOOC](https://www.fun-mooc.fr/en/cours/python-3-des-fondamentaux-aux-concepts-avances-du-langage/)
 
 excluded are the auto-corrected exercises mentioned in the MOOC