Squashed commit of the following:

commit 07d3d82b
Author: Morgan Blanloeil <morgan.blanloeil@kosmos.fr>
Date:   Fri Jan 10 11:32:18 2020 +0100

    ci : modification readme et ajout des licences

commit b0a456d8
Author: Morgan Blanloeil <morgan.blanloeil@kosmos.fr>
Date:   Fri Jan 10 09:24:38 2020 +0100

    ci : installation npm + suppression fichier css