Enhancements

Thanks for this awesome program!

I made a few enhancements
 - Refactored python to be in a class
 - Added logic to read the info_hash of the torrents and remove duplicates (caused because the regular RSS is broken).
 - Actually writes the .torrent files to the file system instead of using wget later in shell script
    - This helps with the problem that not all feed item files ended in .torrent