Replaced django 1.7b2 by django 1.7 in travis.yml
Replaced django 1.7b2 by django 1.7 in travis.yml

max-arnold/django-cities-light,eevol/django-cities-light,KevinGrahamFoster/django-cities-light,greenday2/django-cities-light,eevol/django-cities-light,max-arnold/django-cities-light,yourlabs/django-cities-light