test packages + tox.ini

[russoz]

Hi Thiago,

When running the tests on a clean environment we had failure. According to:

https://docs.pytest.org/en/latest/goodpractices.html#integrating-with-setuptools-python-setup-py-test-pytest-runner

we should add pytest and pytest-runner to setup.py. Also added a tox.ini file to help the testing.

[russoz]

BTW, I tested locally against python3.7 and it worked flawlessly

[codecov]

Codecov Report

Merging #10 into master will decrease coverage by 0.52%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #10      +/-   ##
==========================================
- Coverage    83.5%   82.98%   -0.53%     
==========================================
  Files          10       10              
  Lines         570      570              
==========================================
- Hits          476      473       -3     
- Misses         94       97       +3

Impacted Files	Coverage Δ
src/nexuscli/nexus_client.py	89.42% <0%> (-1.45%)	⬇️

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[russoz]

Impacted files show a file that was untouched by this commit 😲

[thiagofigueiro]

Thanks for this @russoz! Sorry about the delay. Daytime job's been busy :-)