widesky-editor: script fails while attempting to map volume with spaces in dir

[SamuelToh]

I believe directory name with spaces in it is quite common within a windows environment.

Running the widesky-editor would fail in such circumstances.

Error is:

Unable to find image 'the:latest' locally
Pulling repository docker.io/library/the
docker: Error: image library/the:latest not found.

You do get a fancier error message if you have a much recent docker-engine installed.