Implemented a search adapter for the private tracker asia torrents

Signed-off-by: Toon Schoenmakers <nighteyes1993@gmail.com>
Merge pull request #7 from schoentoon/master

Implemented a search adapter for the private tracker asia torrents
Merge pull request #8 from johnconrad/master

Private Tracker Support for hdbits.org
Addded support for a LoginException in TorrentSearchProvider.
* Updated various private tracker adapters to toss a LoginException when invalid login credentials are provided.