Not working, requires Profiler Server

[cboulanger]

It should be pointed out more prominently that program requires a profiler server backend and that the default profiler server is no longer in operation, thus rendering the application unfunctional.

On the OCR-D gitter chat it was suggested that https://hub.docker.com/r/ffink/profiler might provide a replacement.

It would also be good to add information that the project has been retired in favor of https://github.com/cisocrgroup/pocoweb (if that's the case).

Thank you.