.travis: don't test on python 3.2 and 3.3
.travis: don't test on python 3.2 and 3.3

erikdejonge/django-htmlmin,erikdejonge/django-htmlmin,Alcolo47/django-htmlmin,cobrateam/django-htmlmin,cobrateam/django-htmlmin,erikdejonge/django-htmlmin,Alcolo47/django-htmlmin