Support a network location for downloads by using xbmcvfs.
Bumped version to 0.2.0
Return an empty list if there is a network problem.
Use category in url instead of category_id.
Bumped version to 0.2.1
Reduced the chunk size for downloads to make the progress bar smoother.
Catch read timeouts for downloads. Will require requests 2.4.0 to have any effect.