Enhance the README.md file

[cmoulliard]

TODO

• Enhance the README.md file to explain how to claim or register a service
• Add a developer page to explain how to create a front screen (form, list, etc) and map the actions with REST endpoints

[Sgitario]

Some other items that should be addressed in the README.md file:

• Explain the purpose of the project, before even explaining the project name.
• The Related Guides section in the README.md file (https://github.com/halkyonio/primaza-poc#related-guides) mentions Resteasy Reactive and this project is not using it. It's using Resteasy Classic. I'm not sure if using Resteasy Classic was intentional or not. If not, I'm happy to add the necessary changes to use Resteasy Reactive as part of a separate PR.

cc @cmoulliard @aureamunoz

[cmoulliard]

• Explain the purpose of the project, before even explaining the project name.

+1

• mentions Resteasy Reactive and this project is not using it. It's using Resteasy Classic. I'm not sure if using Resteasy Classic was intentional or not. If not, I'm happy to add the necessary changes to use Resteasy Reactive as part of a separate PR.

Do we have to use Resteasy reactive (pro, added value, ...) ? If no, then remove such a wording from the text.

[aureamunoz]

See #68 for the second task