Update .travis.yml

Author: jedymatt

.travis.yml

@@ -14,13 +14,13 @@ before_install:
 install:
     - pip install -r requirements.txt
     - pip install .
-    - pip install pytest
+    - pip install pytest-cov
     - pip install codecov
 before_script:
     - curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
     - chmod +x ./cc-test-reporter
 script:
-    - pytest
+    - pytest --cov=sqlalchemyseed/
     - coverage run --source=sqlalchemyseed -m pytest tests
 after_success:
 #  - bash <(curl -s https://codecov.io/bash)