Updated string and file header with unicode utf8 features

django-generic-m2m crashes when related models meta name contains utf8 characters. This commit fixes this.
Merge pull request #18 from n3storm/master

Updated string and file header with unicode utf8 features
generic_objects can be filtered by model instance type. e.g.: pizza.related.all().generic_objects(Person)
Merge pull request #19 from quiqueporta/master

generic_objects can be filtered by model instance type
Merge pull request #2 from coleifer/master

latest from Charles