message: Add help for <args>...
  Add help for args option. Closes
diff: @@ -66,6 +66,7 @@ fn main() {
  Arg::with_name("args")
  .set(ArgSettings::Last)
  .multiple(true)
  + .help("Arguments to be passed to the test executables can be used to filter or skip certain tests")
  ]))
  .get_matches();
  