Update README.rst

README.rst

@@ -58,6 +58,13 @@ If you intend to make modification, please raise an issue or send me an email
 first. Then, fork the repository, apply your changes, then make a pull request 
 that will be review.
 
+Close the repository as follow (use the --recurse-submodule
+option only if you want to clone the data as well):
+
+.. code-block:: bash 
+
+   git clone https://github.com/simongravelle/nmrformd.git --recurse-submodule
+
 Build the documentation locally from the `docs/`_ folder by typing:
 
 .. code-block:: bash 
@@ -118,4 +125,4 @@ This project has received funding from the European
 Union's Horizon 2020 research and innovation programme
 under the Marie Skłodowska-Curie grant agreement No 101065060.
 
-.. image:: docs/source/figures/logo/msca.png
+.. image:: docs/source/figures/logo/msca.png