Merge pull request #3 from carlio/feature/use-pillow

Using Pillow instead of PIL
Merge branch 'master' of github.com:akvo/django-counter
[#3] Fix urls.py import

Django 1.6 removes django.conf.urls.default. Fix import in urls.py to
import from django.conf.urls instead. This should be backwards
compatible down to 1.4, but won't work for 1.3.
Merge pull request #4 from akvo/feature/3_fix_urls_import

[#3] fix urls import