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nosetests tests/ --with-holmium --holmium-browser=firefox --holmium-remote=http://blah.com:4444/wd/hub -v
SKIP: unable to initialize driver (name: firefox)
933f0ce fixes the issue
edit: 933f0ce only fixes the issue for remote driver but breaks it for local firefox.
issue #19 : remote driver with firefox
capabilities were being incorrectly set as 'capabilities' in the driver
initialization when the browser is firefox