Also run tests for Django 1.6 on 2.6 and 2.7
Also run tests for Django 1.6 on 2.6 and 2.7

henriquechehad/django-image-cropping,winzard/django-image-cropping,henriquechehad/django-image-cropping,winzard/django-image-cropping,henriquechehad/django-image-cropping,winzard/django-image-cropping