Squashed commit of the following:

commit 5fb84e7d
Author: Morgan Blanloeil <morgan.blanloeil@kosmos.fr>
Date:   Fri Jan 10 11:32:15 2020 +0100

    ci : modification readme et ajout des licences

commit 0bc3a9c9
Author: Morgan Blanloeil <morgan.blanloeil@kosmos.fr>
Date:   Fri Jan 10 09:34:04 2020 +0100

    ci : installation npm + suppression fichier css