test(coverage): get test coverage report using kcov and coveralls.io

[bochaco]

No description provided.

[hunterlester]

Did you also have a go with https://github.com/huonw/travis-cargo ?

[bochaco]

Yes I also tried that, nevertheless current state is that it seems to be publishing it correctly after I enabled the project in coveralls, although I don't see the report generated there: https://coveralls.io/github/maidsafe/safe-authenticator-cli I'll have to debug it locally , maybe I'm not sending the correct files/content to coveralls.

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@be0f491). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master      #32   +/-   ##
=========================================
  Coverage          ?   66.66%           
=========================================
  Files             ?        2           
  Lines             ?      651           
  Branches          ?        0           
=========================================
  Hits              ?      434           
  Misses            ?      217           
  Partials          ?        0

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