Adding multi lang switch

docs/source/index.rst

-Welcom on esieabot's documentation!
-===================================
+Welcome on esieabot's documentation!
+====================================
 
 .. image:: /_static/images/esieabot.png
    :width: 300
@@ -9,6 +9,8 @@ L’**esieabot** (/ezjabɔt/) is an opensource programmable educational robot ma
 Fun but professional, it will help you quickly acquire or improve your digital skills:
 programming, electronics, artificial intelligence, cybersecurity, embedded systems, etc.
 
+This documentation is available in both `|FR| French <https://esieabot.readthedocs.io/en/latest/>`_ and `|EN| English <https://esieabot.readthedocs.io/en/latest/>`_.
+
 .. note::
 
    If you just get your esieabot, you should start with the :doc:`Assemble <assemble>` then :doc:`First connection <use>`.
@@ -26,3 +28,8 @@ Content
    Program <program>
    Improve <improve>
    FAQ <faq>
+
+
+.. |FR| image:: France.png
+
+.. |EN| image:: United-Kingdom.png
\ No newline at end of file