fsouza/go-dockerclient — pull request #72 by jhulten (2014-02-21 21:52:29+00:00)
Title: support listeners for events

Change adds two methods to client:

- AddEventListener adds a channel to receive *APIEvents
If this is the first listener, event monitoring is started.
- RemoveEventListener causes a channel to no longer receive *APIEvents
If this is the last listener, event monitoring is stopped.