Merge pull request #20 from whalesalad/master

HttpResponse objects via authenticate() will now stop view execution
add Michael Whalen to AUTHORS.md
add tests for Endpoint.authenticate() method handling
document the new Endpoint.authenticate() method behaviour
tweak Sphinx conf.py for compatibility with Django 1.6+
bump version to 0.0.8
Python3.x compatibility fix
update `make docs` target to zip the HTML after building it