* Few changes to the configmap package
- New* methods return concrete types
- defaultImpl is now InformedWatcher
- fixedImpl is now StaticWatcher
- Included a new ManualWatcher that mimics the InformedWatcher
in behaviour. ie. allows updates - making this a true 'mock'
* Include note about embedding the ManualWatcher in the InformedWatcher
* Update static_watcher.go
Fix some godoc
Dave Protasowski