Dockerize repository.

Add a Dockerfile and update README with instructions on how to
test-drive the web console.

The image is not pushed to the Docker index yet.

On a system with prerequisites already installed, the project can be run
in under 5 minutes. Once the code is stable enough, a Docker index
pre-built image may be maintained.
Merge pull request #9 from StanAngeloff/feature/jquery-console-prototype/dockerize

Dockerize repository.