Also run flake8 on Travis CI
Also run flake8 on Travis CI

moreati/django-two-factor-auth,koleror/django-two-factor-auth,percipient/django-two-factor-auth,mathspace/django-two-factor-auth,Bouke/django-two-factor-auth,fusionbox/django-two-factor-auth,koleror/django-two-factor-auth,Bouke/django-two-factor-auth,percipient/django-two-factor-auth,moreati/django-two-factor-auth,mathspace/django-two-factor-auth,fusionbox/django-two-factor-auth