refactor: inclusion in prototype services readme

[Dudleyneedham]

fixes https://github.com/KILTprotocol/ticket/issues/607

Had a question inside the RIOT channel regarding the local setup.

Noticed there was no mention of the Prototype serivces.

How to test:

Let us think of stuff.

Checklist:

• I have verified that the code works
• I have verified that the code is easy to understand
  • If not, I have left a well-balanced amount of inline comments
• I have left the code in a better state
• I have documented the changes (where applicable)

[wischli]

As discussed, we should change the default spin up to include the services in the future. But for now, this is fine.

[rflechtner]

I wasn't aware the readme was so outdated. No mention of the docker-compose instructions (see our internal documentation). This could also help in improving the readme.

[Dudleyneedham]

If you want to add somethings please do.

[rflechtner]

As discussed, we should change the default spin up to include the services in the future. But for now, this is fine.

services are already included, just use docker-compose up

[wischli]

Good improvement!