Add codecov integration

.travis.yml

@@ -53,8 +53,10 @@ matrix:
     - env: TOXENV=pypy-djmaster
 install:
   - pip wheel -r tests/requirements.txt
-  - pip install tox
+  - pip install tox codecov
 script: tox
+after_success:
+  - codecov
 branches:
   except: templates/1.5.x templates/1.6.x
 deploy:

README.rst

@@ -9,6 +9,10 @@ django-configurations
    :alt: Jazzband
    :target: https://jazzband.co/
 
+.. image:: https://codecov.io/github/jazzband/django-configurations/coverage.svg?branch=master
+   :alt: Codecov
+   :target: https://codecov.io/github/jazzband/django-configurations?branch=master
+
 django-configurations eases Django project configuration by relying
 on the composability of Python classes. It extends the notion of
 Django's module based settings loading with well established