Made django-comps work with python3.3 and Django > 1.4 < 1.7. Changed
tox to test these, but not test against trunk (yet).
Simplified StringIO/BytesIO code to just use BytesIO in PY2 as well
Updated setup.py classifiers to indicate Python3.3 is supported
Need to utf8 encode bytes for html content in export-comps view, which
is utf8 bytes
Updated setup.py and AUTHORS with more recent info
Merge pull request #13 from calebsmith/master

Made django-comps work with python3.3 and Django > 1.4 < 1.7.