tox runs no tests

[peterbe]

Fixes #22

[peterbe]

@Geekfish I'm not sure a review is needed here because if it passes in Travis it's probably good enough :)

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@590daee). Click here to learn what that means.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             master    #23   +/-   ##
=======================================
  Coverage          ?   100%           
=======================================
  Files             ?      1           
  Lines             ?     39           
  Branches          ?      0           
=======================================
  Hits              ?     39           
  Misses            ?      0           
  Partials          ?      0

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[Geekfish]

@peterbe cool, LGTM! Happy to rebase once this is merged.

[peterbe]

@Geekfish try now.