This PR removes code not in the project's scope anymore.
It removes yml configuration file. And digitalocean provider.
Oribiter will be a Docker Swarm specific autoscaler.
Fixed#17
Fixed#9
This PR bootstrap the autodetection feature:
1. It works when the configuration file is not setup. Right know I am
not going to manage the merge of double sources (autodetection and
configuration file).
2. At the moment only Docker Swarm will support this feature.