Don't neet virtualenv or setuptools_git to run tests.
Denote bytes-nature of 'wsgi.input' stream.
Don't need 'wsgiref', it is in the stdlib.
Tests passing under Python 3.2, 3.3
Silence Py3k unittest nannyism.
Py3k:  suppress ResourceWarning for tempfile.
Note support for Python 3.2 / 3.3.