Speed up builds by forcing Travis CI to use container infrastructure.
Speed up builds by forcing Travis CI to use container infrastructure.

Tictrac/django-push-notifications,shigmas/django-push-notifications,hylje/django-push-notifications,Adys/django-push-notifications,jleclanche/django-push-notifications,GaleDragon/django-push-notifications,fsto/django-push-notifications,cristiano2lopes/django-push-notifications,avichalp/django-push-notifications,nnseva/django-push-notifications,jamaalscarlett/django-push-notifications,lukeburden/django-push-notifications,CustomerSupport/django-push-notifications,Ubiwhere/django-push-notifications,rsalmaso/django-push-notifications,matthewh/django-push-notifications,vuchau/django-push-notifications,dilvane/django-push-notifications,1vank1n/django-push-notifications,gkirkpatrick/django-push-notifications