add citation

CITATION.cff

@@ -0,0 +1,15 @@
+cff-version: 1.2.0
+message: "If you use this software, please cite it as below."
+authors:
+  - family-names: Manière
+    given-names: Louis
+    orcid: https://orcid.org/0000-0003-0426-2975
+    affiliation: "CNRS - Environnement Ville Société (UMR 5600)"
+title: "mapdoapp"
+version: 1.0.0
+repository-code: "https://github.com/EVS-GIS/mapdoapp"
+license: GPL-3.0 license
+identifiers:
+  - type:
+    value:
+date-released: 2024-02-19

README.Rmd

@@ -27,3 +27,11 @@ L'application MAPDO est une application de visualisation, d'analyse et d'interpr
 ``` {r, eval=FALSE}
 remotes::install_github("https://github.com/EVS-GIS/mapdoapp.git")
 ```
+
+## How to cite
+
+Manière, L. (2024). mapdoapp (Version 1.0.0) [Computer software]. https://github.com/EVS-GIS/mapdoapp
+
+## Licence
+
+This program is released under the [GNU Public License v3](https://github.com/EVS-GIS/mapdoapp/blob/main/LICENSE).

README.md

@@ -18,3 +18,13 @@ hydrographiques à l’échelle du bassin versant.
 ``` r
 remotes::install_github("https://github.com/EVS-GIS/mapdoapp.git")
 ```
+
+## How to cite
+
+Manière, L. (2024). mapdoapp (Version 1.0.0) \[Computer software\].
+<https://github.com/EVS-GIS/mapdoapp>
+
+## Licence
+
+This program is released under the [GNU Public License
+v3](https://github.com/EVS-GIS/mapdoapp/blob/main/LICENSE).