Support different endpoint mappings over a configuration file

[marceloboeira]

It would be essential to have a external configuration file that we could use to setup the route/sink adapters maps:

routes:
  - path: "/foo"
    sink: 
      adapter: redis
      uri: "redis://[USER]:[PASSWORD]@[IP]:[PORT]"
  - path: "/bar"
    sink: 
      adapter: sqs
      ...

then, we could have something like:

crowd -f crowd.yml

Which crowd.yml could be the default ...