Usage Documentation missing.

Problem/Motivation

"How to use" advertised in table of Contents, but missing from README.md.

Steps to reproduce

Browse to: https://www.drupal.org/project/dopup →
or `less web/modules/contrib/dopup/README.md`

Proposed resolution

Please add usage documentation. The screen shots are promising but more frustrating then helpful.

Remaining tasks

User interface changes

API changes

Data model changes