Create ActivitiesClient and interface
Fill out the activity model
Working away adding methods
Finish adding methods
Add tests for ActivityClient
Add Observable ActivitiesClient and interface
Rename observable clients and add tests

Renamed to be consistent with non observable classes.
Tests are incomplete.  Need to know where to expose this in the api.
Add ActivitiesClient to IGithubClient.
Fix observable tests
Change name to ActivityEvents
Rename class to IEvents and add IActivities class
Let's instantiate a concrete class and not an Interface!
Apply naming suppression to allow build to build.
Update release notes for 0.1.3
Add notes on deploying a new release
Add link to Octokit on MyGet
Update version
fix integration tests
Remove use of .Wait() from tests
Add way to get to ObservableEventsClient