DOC: adding myst markdown to the readme

Author: bsipocz

README.md

@@ -1,4 +1,9 @@
 IRSA Tutorials
 ==============
 
-Notebooks developed to demonstrate IRSA use cases.
+Notebooks developed to demonstrate IRSA use cases.
+
+We do use MyST Markdown format for the notebooks, please visit [the upstream documentation](https://mystmd.org/guide/md-vs-ipynb) to learn more about the reasoning behind the choice. 
+However, we add it here that you can easily have the same user experience in JupyterLab if these two dependencies are installed:
+ - [jupytext library](https://pypi.org/project/jupytext/)
+ - [jupyterlab-myst JupyterLab extension](https://pypi.org/project/jupyterlab-myst/)