Update Humble Indie Bundle

The goal of this script is to parse your Humble Bundle library page
and retrieve the interesting files. It is right now in its early
stage of development but do its job right although it could have
been cleaner.

Right now, for using it, I simply save my library page on disk and
pass it as the first argument of the script.  The script will then
collect all the interesting on the page, select in preference FLAC and
x64/deb packages for linux and download the torrent file for them in
the current directory.  There is right now no way to modify the
behavior of the script except by editing it directly, but it is simple
enough to be doable relatively easily.

The only dependency required for the script is Python 3.x and bs4, and
it should work on Mac and Windows with no problem at all.