RFE: Autogenerate a README file

[ncoghlan]

For a new Python Django project, I selected the options to:

• use virtualenv
• add a Dockerfile
• add a GitHub repo

It would be helpful if each of those also generated appropriate entries in a README file, so that I could easily see how to:

• run the generated application locally in virtualenv
• work on the project in a Docker container rather than directly on the host system
• build and publish a Docker image based on the Dockerfile
• clone the source repo on another system

The setup wizard displays some of the relevant info on the final screen, so it appears to have it available.