Saucelabs integration.

Upgrade to karma 0.9
Using saucelabs free plan for open-source projects.

You can run tests locally with the saucelab's supported browser+version/platform+version combinations supported here:
https://saucelabs.com/docs/platforms/selenium

``karma start test/karma.conf.js`` will currently run tests on ie9 on windows 7 locally.

Will follow up with travis integration.