karma-runner/karma-firefox-launcher — pull request #24 by mzgol (2014-12-31 15:14:17+00:00)
Title: fix: Fix Firefox Developer Edition config

1. Firefox Developer folder name in OS X is FirefoxDeveloperEdition.app, not
FirefoxDeveloper.app
2. Existing Aurora users were auto-updated to Firefox Developer Edition without
changing the folder where the browser was installed; this commit makes the
configuration fallback to the previous directory.