Try testing FF.dev again

Author: mar10

Gruntfile.coffee

@@ -361,7 +361,7 @@ module.exports = (grunt) ->
                   { browserName: "chrome", version: "dev", platform: "Windows 10" }
                   { browserName: "chrome", version: "latest", platform: "Windows 10" }
                   { browserName: "chrome", version: "latest-1", platform: "Windows 10" }
-                  # { browserName: "firefox", version: "dev", platform: "Windows 10" }
+                  { browserName: "firefox", version: "dev", platform: "Windows 10" }
                   { browserName: "firefox", version: "latest", platform: "Windows 10" }
                   { browserName: "firefox", version: "latest-1", platform: "Windows 10" }
                   { browserName: "firefox", version: "latest", platform: "Linux" }