update pypi listing, has 0.4.2 and should be 0.5.0

[bhcopeland]

uses httplib ..

https://github.com/disqus/disqus-python/blob/master/CHANGES

Edit:

Oh, "support for python 3"

Can you guys updates pypi then please, its still running older (non python3) version.

https://pypi.python.org/pypi/disqus-python/0.4.2