Added travis config to ignore unittest2 in Python 3
Added travis config to ignore unittest2 in Python 3

jazzband/django-mongonaut,pydanny/django-mongonaut,jazzband/django-mongonaut,lchsk/django-mongonaut,lchsk/django-mongonaut,lchsk/django-mongonaut,pydanny/django-mongonaut,pydanny/django-mongonaut,jazzband/django-mongonaut