enhancement: normalize file paths in config.json to use forward slashes

[Kosta-Github]

I would like to normalize the file paths stored in the config.json file to always use forward slashes /. Using forward slashes works on all platforms including Windows.

This would allow us to check in the machine configs into version control and share them within a team using different platforms (Linux, OSX, and Windows). Right now, this doesn't work for machines created on a Windows system, because the file paths to the SSH keys HostOptions.AuthOptions.CaCertPath (and corresponding other properties) contain backward slashes \ and the files cannot be opened on non-Windows systems (e.g., certs\\ca.pem).

However, the other way round - creating a machine on a non-Windows system and using the created config.json on a Windows system thereafter - is not a problem...

BTW, I am calling docker-machine with a custom storage path option like this:

docker-machine --storage-path=. create ...

[jeanlaurent]

Good point, I like it.