Travis: Add Python 3.4 for testing
Travis: Add Python 3.4 for testing

llazzaro/django-scheduler,GrahamDigital/django-scheduler,GrahamDigital/django-scheduler,mbrondani/django-scheduler,sprightco/django-scheduler,nharsch/django-scheduler,mbrondani/django-scheduler,jrutila/django-scheduler,nharsch/django-scheduler,Gustavosdo/django-scheduler,llazzaro/django-scheduler,rowbot-dev/django-scheduler,nwaxiomatic/django-scheduler,rowbot-dev/django-scheduler,llazzaro/django-scheduler,sprightco/django-scheduler,sprightco/django-scheduler,nwaxiomatic/django-scheduler,GrahamDigital/django-scheduler,nwaxiomatic/django-scheduler,drodger/django-scheduler,drodger/django-scheduler,jrutila/django-scheduler,Gustavosdo/django-scheduler,drodger/django-scheduler