update licence file to GLP 3

.Rbuildignore

@@ -13,3 +13,4 @@ inst/examples
 ^revdep$
 ^README\.Rmd$
 ^CRAN-SUBMISSION$
+^LICENSE\.md$

DESCRIPTION

@@ -4,11 +4,11 @@ Title: Antares Visualizations
 Version: 0.18.3
 Authors@R: c(
     person("Tatiana", "Vargas", email = "[email protected]", role = c("aut", "cre")),
-    person("Jalal-Edine", "Zawam", role = "aut"),
-    person("Francois", "Guillem", role = "aut"),
-    person("Benoit", "Thieurmel", role = "aut"),
-    person("Titouan", "Robert", role = "aut"),
-    person("Paul", "Plessiez", role = "aut"),
+    person("Jalal-Edine", "Zawam", role = "ctb"),
+    person("Francois", "Guillem", role = "ctb"),
+    person("Benoit", "Thieurmel", role = "ctb"),
+    person("Titouan", "Robert", role = "ctb"),
+    person("Paul", "Plessiez", role = "ctb"),
     person("Baptiste", "Seguinot", role = "ctb"),
     person("RTE", role = "cph")
     )
@@ -19,7 +19,7 @@ Description: Visualize results generated by Antares, a powerful open source soft
     'Antares' users visually explore the results of their simulations.
 URL: https://github.com/rte-antares-rpackage/antaresViz
 BugReports: https://github.com/rte-antares-rpackage/antaresViz/issues
-License: GPL (>= 2) | file LICENSE 
+License: GPL (>= 3)
 Encoding: UTF-8
 Depends:
     antaresRead (>= 2.2.9),