README now starts with the assumption that docker is setup.
The discrete volume, notebook, pull steps are also moved to "Behind the scenes",
and implied in `make build` in the setup.
Getting started is now:
1. GitHub OAuth
2. SSL
3. userlist
4. `make build`
5. `docker-compose up`
The script was meant to facilitate hub build and run operations
while shielding new Docker users from `docker-compose`. It now
provides very little functionality, and even gets in the way if
specifying GITHUB oauth environment variables in the .env file.
(c) Copyright IBM Corp. 2016
