Merge pull request #168 from asherf/md

Run flake8 on code.

Author: asherf

.travis.yml

@@ -36,6 +36,7 @@ install:
   - mysql -e 'create database django_prometheus_1;'
 script:
   - if [[ $TRAVIS_PYTHON_VERSION == "3.7" ]]; then black --check django_prometheus/; fi
+  - flake8 django_prometheus
   - coverage run --source=django_prometheus setup.py test
   - python setup.py sdist bdist_wheel
   - pushd  django_prometheus/tests/end2end && PYTHONPATH=../../.. coverage run --source=django_prometheus manage.py test &&  popd

requirements.txt

@@ -1,6 +1,7 @@
 Django>=1.11
 django-redis>=4.8
 black; python_version >= '3.6'
+flake8
 prometheus-client>=0.7
 pip-prometheus>=1.2.1
 mock

tox.ini

@@ -0,0 +1,2 @@
+[flake8]
+ignore = E501,W503