added suggestions by Ariel

1) Use a different port than the standard used by VW. This achieves 2 purposes: a) less likely to collide with other vw procs on the same machine b) tests the --port option a bit better (non default)
2) Remove the ugly "don't run this in travis" blob at the top, since I think this fix is exactly what would enable it to run in travis
3) When starting the vw as a deamon, redirect stdin and stdout from/to /dev/null