Update .travis.yml

.travis.yml

@@ -7,6 +7,6 @@ install:
   - "python setup.py -q install"
   - "pip install pytest-pep8 pytest-cov codecov"
 # command to run tests
-script: "pytest --cov=./"
+script: "pytest --cov-config .coveragerc --cov=./"
 after_success:
   - codecov