Improved error message when too many arguments are given.
Improved error message when too many arguments are given.

ansonwzj/CPSC416Taipei,FlexibleBroadband/Taipei-Torrent,Dataman-Cloud/Taipei-Torrent,nictuku/Taipei-Torrent,rakoo/rakoshare,zyxar/taipei,beni55/Taipei-Torrent,rakoo/rakoshare,Dataman-Cloud/Taipei-Torrent,nictuku/Taipei-Torrent,FlexibleBroadband/Taipei-Torrent,beni55/Taipei-Torrent,ansonwzj/CPSC416Taipei