create version release

Author: VLucet

DESCRIPTION

@@ -1,6 +1,6 @@
 Package: csdm
 Title: Catch Saturation-Depletion Models with R and STAN
-Version: 0.0.0.9000
+Version: 0.9.0
 Authors@R: c(
     person("Valentin", "Lucet", email = "valentin.lucet@gmail.com", role = c("aut", "cre")),
     person("Eric", "Pedersen", email = "eric.pedersen@concordia.ca", role = c("aut")))