fixed issue #6: added bug report and source URL in DESCRIPTION

DESCRIPTION

@@ -15,6 +15,8 @@ Description: Interval fusion and selection procedures for regression with
              <doi:10.1007/s11222-018-9806-6> (standard ridge and sparse SIR are 
              also included in the package) and a random forest based approach.
 Depends: R (>= 3.5.0), foreach, doParallel, graphics, stats
+URL: https://forgemia.inra.fr/sfcb/sisir
+BugReports: https://forgemia.inra.fr/sfcb/sisir/-/issues
 Imports:
     Matrix,
     expm,