Can't start Firefox Dev edition because of spacing in the path

[moeenio]

On macOS, because Firefox Developer Edition's binary is at /Applications/Firefox Developer Edition.app/Contents/MacOS/firefox, when it's specified with the firefox.path parameter, browsh will attempt to run it, but without properly escaping spaces, which doesn't work. I'm on macOS 10.11, on Terminal.app (I know, I plan on installing another one x))

[moeenio]

Workaround was to rename the Firefox to have no spaces, but now I have a "FirefoxDevEdition" sitting on my dock, not really pretty. And for some reason it created a new profile when launching it.