Fix trove classifier for Django 1.10 in setup.py

[zsiciarz]

The classifier for Django 1.9 was duplicated.

BTW, there's already 2.2.1 on PyPI, but no such version here on Github. Did you by any chance forget to push changes?

[codecov-io]

Current coverage is 89.56% (diff: 100%)

Merging #5 into master will not change coverage

@@             master         #5   diff @@
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  Files             8          8          
  Lines           460        460          
  Methods           0          0          
  Messages          0          0          
  Branches          0          0          
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  Hits            412        412          
  Misses           48         48          
  Partials          0          0          

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[pydanny]

Thanks for the PR.

In the case of 2.2.1, I think it missed something important and since it's nigh impossible to delete borked versions on PyPI, I just redid it as 2.2.2.