Update launch command

[yegorkryukov]

If path to directory in (pwd) contains spaces, this command will return an error:

docker run -v $(pwd)/Assignment:/code/Assignment -it travelingsalesman/meta-docker /bin/bash

docker: invalid reference format: repository name must be lowercase.
See 'docker run --help'.

An easy fix is to double quote the path:

docker run -v "$(pwd)/Assignment:/code/Assignment" -it travelingsalesman/meta-docker /bin/bash