Correction of the Authors@R list

The creator is the maintainer (the person who compiles the package)

DESCRIPTION

@@ -4,12 +4,12 @@ Title: Suite of GR hydrological models for precipitation-runoff modelling
 Version: 1.0.2
 Date: 2016-10-20
 Authors@R: c(
-  person("Laurent", "Coron", role = c("aut", "cre", "trl")),
+  person("Laurent", "Coron", role = c("aut", "trl")),
   person("Charles", "Perrin", role = c("aut", "ths")),
   person("Claude", "Michel", role = c("aut", "ths")),
   person("Vazken", "Andréassian", role = c("ctb", "ths")),
   person("Pierre", "Brigode", role = c("ctb")),
-  person("Olivier", "Delaigue", role = c("ctb")),
+  person("Olivier", "Delaigue", role = c("cre", "ctb"), email = "airGR@irstea.fr"),
   person("Nicolas", "Le Moine", role = c("ctb")),
   person("Thibaut", "Mathevet", role = c("ctb")),
   person("Safouane", "Mouelhi", role = c("ctb")),