Merge pull request #1 from zenoss/feature/tag-image

Added api call for tag
Merge branch 'develop' of https://github.com/zenoss/go-dockerclient into develop
Initial commit
Use io.Pipe to make things (mostly) work
Made it work
Do a better job of closing subscriptions. Add doc comments for clean golint
Add TODO for clean listenAndDispatch termination
Added doc comments to the EventMonitor interface methods
Better Subscribe doc comment(s). Debug logging for dispatch errors
Change Subscriber.Close() to Cancel(). Cancel all subscribers when EventMonitor closes
Move the closing of the event monitor done channel
Better validation of scanned event text (makes it work with Docker 0.10)
Add unsubscribe method so that Subscriptions don't directly manipulate EventMonitor state
Add Tag to ImportImageOptions
Merge pull request #7 from zenoss/tag_import_image

Add Tag to ImportImageOptions
Make the listenAndDispatch goroutine exit when the EventMonitor is closed
Validate event strings passed to Subscription.Handle()
Make the Subscription.Handle() doc comment more better
Merge pull request #6 from zenoss/feature/eventmonitor

Feature/eventmonitor
Use a tcp endpoint for the tests so they work repeatably