Fixes docs and parallelize some travis jobs

[fedefernandez]

What this does?

• Fixes the tables in the docs
• Execute the tests in the regular builds
• Parallelize the test stage
• Parallelize the deploy stage

After the commit e0673ff, the PRs are not runing the tests. See for example the previous PR build:

• https://travis-ci.org/higherkindness/mu/builds/587708806

And the next one:

• https://travis-ci.org/higherkindness/mu/builds/587777811

Checklist

• Reviewed the diff to look for typos, println and format errors.
• Updated the docs accordingly.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@6df2682). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #691   +/-   ##
=========================================
  Coverage          ?   81.55%           
=========================================
  Files             ?       73           
  Lines             ?     1160           
  Branches          ?       15           
=========================================
  Hits              ?      946           
  Misses            ?      214           
  Partials          ?        0

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[juanpedromoreno]

Thanks @fedefernandez