Updates Readme after #312

[fe51]

Pitch

Thanks to #312, camera management logic has been generalized.

However, the README stills needs to help user to setup and run the project (even localy)

what should be done

• After

  pyro-engine/README.md

  Line 87 in a0825ac

  ### Example of `credentials.json`:

  
  there should be a section like ### running services here ? providing for exemple a make command ? Probably the make run command

Happy to discuss it