[#161921842] Integrate Travis with with codecov

[ipaullly]

What does this PR do?

add the codecov test coverage badge on my readme.md

Description of Task to be completed?

• generate coverage xml file in home directory

• generate codecov badge

• add codecov badge markdown in README.md

What are the relevant pivotal tracker stories?

#34

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@8c5e133). Click here to learn what that means.
The diff coverage is 90.73%.

@@            Coverage Diff            @@
##             master      #35   +/-   ##
=========================================
  Coverage          ?   90.73%           
=========================================
  Files             ?       11           
  Lines             ?      259           
  Branches          ?       14           
=========================================
  Hits              ?      235           
  Misses            ?       20           
  Partials          ?        4

Impacted Files	Coverage Δ
app/utilities/JWT_token.py	0% <0%> (ø)
app/api/v1/__init__.py	100% <100%> (ø)
app/tests/v1/test_login.py	100% <100%> (ø)
app/auth/v1/__init__.py	100% <100%> (ø)
app/api/v1/models.py	100% <100%> (ø)
app/tests/v1/test_register.py	100% <100%> (ø)
app/tests/v1/test_edgecases.py	100% <100%> (ø)
app/tests/v1/test_parcels.py	100% <100%> (ø)
app/auth/v1/models.py	84.61% <84.61%> (ø)
app/auth/v1/views.py	87.5% <87.5%> (ø)
... and 1 more

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