Create ActivitiesClient and interface
added test and bugfix for merging querystring parameters
Fill out the activity model
Working away adding methods
Finish adding methods
updated ApplyParameters implementation to be more robust
i don't like this test, come at me bro
Fixed up some simple documentation typos/missing params
Merge pull request #172 from jpsullivan/jpsullivan/documentation-fixes

Fixed up some simple documentation typos/missing params
Stub out the Organization Members API Client
Implement Organization Members API Client
Add tests for the Organization Members API Client
Comment ApiUrls used by the Organization Members API Client
Rename the Orgs Members API Client interface
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