Fix for issue #17 - JSON Error

[mattjegan]

Fixed the JSONDecodeError by allowing requests to handle the interaction with the json api.

This is now working:

$ python3 vanity.py vanity --json
   vanity-1.2.5.zip    2013-03-18        1,909
   vanity-2.0.4.zip    2014-09-03        1,221
   vanity-1.1.1.zip    2011-10-28        2,546
   vanity-2.0.5.zip    2014-09-03        2,958
   vanity-1.2.4.zip    2013-02-19        1,897
vanity-1.2.0.tar.gz    2012-01-30        2,362
   vanity-2.0.3.zip    2013-06-28        2,645
   vanity-2.0.0.zip    2013-05-26        1,651
   vanity-1.2.2.zip    2012-07-31        2,133
   vanity-2.1.0.zip    2015-07-03        3,395
   vanity-1.2.3.zip    2012-08-08        2,186
vanity-1.2.1.tar.gz    2012-02-16        2,473
   vanity-1.1.2.zip    2011-10-28        2,417
   vanity-1.1.0.zip    2011-10-26        2,416
   vanity-2.0.2.zip    2013-05-27        1,671
   vanity-2.2.0.zip    2016-01-06          253
vanity-2.2.0.tar.gz    2016-01-06          399
     vanity-1.0.zip    2011-04-14        2,628
   vanity-2.2.1.zip    2016-04-27           30
vanity-2.2.1.tar.gz    2016-04-27           90
   vanity-2.0.1.zip    2013-05-27        1,660
----------------------------------------------
vanity has been downloaded 38,940 times!

     *** Note: PyPI stats are broken again; we're now waiting for warehouse. https://github.com/aclark4life/vanity/issues/22 ***

[aclark4life]

Looks good to me, thanks

[aclark4life]

And… released: https://pypi.python.org/pypi/vanity/2.2.2. Thanks again @mattjegan