print the message when lurette is call with sut

_oasis

 OASISFormat: 0.4
 Name:        Lutin
-Version:     2.49
+Version:     2.50
 Authors:     Erwan Jahier, Pascal Raymond, Bertrand Jeannnet (polka), Yvan Roux
 Maintainers: erwan.jahier@univ-grenoble-alpes.fr  
 License:     CeCILL

lurette-nocaml/src/lurette.ml

-(* Time-stamp: <modified the 03/05/2018 (at 15:39) by Erwan Jahier> *)
+(* Time-stamp: <modified the 04/05/2018 (at 10:39) by Erwan Jahier> *)
 (* Mimick the behavior of 'rdbg -lurette', but without the dependency
    on ocaml *)
 open Event
@@ -88,6 +88,12 @@ let _ =
    
 
 let _ =
+  if args.suts = [] then (
+    Printf.printf "\027[35mW: Please set at least one sut \027[00m\n\n" ;
+    flush stdout;
+    help()
+  )
+  else
   try RdbgRun.lurette_start()
   with
   | RdbgRun.OracleError str ->

lutin/src/version.ml

-let str="2.49"
-let sha="0de5b1b"
+let str="2.50"
+let sha="b48d5ee"