Fix some API details
Use different cakes for peers and brokers on integration tests

Also, move all the code in coinffeine-test to the test/ source root.
Initialize PeerSupervisorActor from configuration
Simplify PeerSupervisorActor and PeerActor into one

And extract the behavior of requesting quotes to a specialized actor
QuoteRequestActor and add missing tests to the moved code.
Introduce a partial implementation of CoinffeineApp

It just make it pass the enabled integration test. More to come.
Improve readability of AcceptanceTest class
Merge pull request #124 from sortega/feature/acceptance

Introduce a partial implementation of CoinffeineApp