Complete documentation coverage of registry operator

[michael-valdron]

/kind user-story

Which area this user story is related to?

/area registry

User Story

For someone who uses the registry operator to manager their deployment of the devfile registry, it is important to know what options can be set and how to set them.

The README.md and other supporting documentation files for the registry operator should have complete coverage on usage of its makefile and deployment spec fields. These should describe what the usage is and what it does.

When using helm chart for devfile registry deployments, the individual performing this has access to complete documentation on how to use and specify parameters for the deployment. This provides someone deploying the devfile registry with the ease to take full advantage of what they need for their deployment environment.

Acceptance Criteria

• Provide complete documentation on makefile usage
• Provide complete documentation on deployment spec fields