add flake8

Makefile

@@ -33,5 +33,9 @@ test_no_coverage:
 tox:
 	@tox
 
+# run static analyser
+flake8:
+	@flake8 django_unused_media tests
+
 upload:
 	@python setup.py sdist upload

README.md

@@ -1,6 +1,6 @@
 # Delete unused media files from Django project
 
-[![build-status-image]][travis]
+[![build-status-image]][travis] [![PyPI][pypi-version-image]][pypi-version]
 
 This package provides management command `cleanup_unused_media` for Django applications. With help of this management command you can remove all media files which are no longer used (files without references from any Django model with `FileField` or `ImageField` fields or their inheritances).
 
@@ -77,9 +77,15 @@ To run tests:
 ```
 make test
 ```
+To run static analyser:
+```
+make flake8
+```
 
 # License
 [MIT licence](./LICENSE)
 
 [build-status-image]: https://api.travis-ci.org/akolpakov/django-unused-media.svg?branch=master
-[travis]: http://travis-ci.org/akolpakov/django-unused-media?branch=master
+[travis]: http://travis-ci.org/akolpakov/django-unused-media?branch=master
+[pypi-version-image]: https://img.shields.io/pypi/v/django-unused-media.svg
+[pypi-version]: https://pypi.python.org/pypi/django-unused-media

setup.py

@@ -27,6 +27,7 @@
     'coveralls',
     'django_nose',
     'pypandoc',
+    'flake8',
 ]
 
 setup(

tox.ini

@@ -33,6 +33,9 @@ envlist =
     pypy-1.11.X
 downloadcache = .tox/_download/
 
+;[flake8]
+
+
 [testenv:py27-1.6.X]
 basepython = python2.7
 commands =
@@ -215,4 +218,4 @@ commands =
     make setup
     make test_no_coverage
 deps =
-    Django>=1.10,<1.12
+    Django>=1.10,<1.12