Start of blob api
Add tests and interface

Also include stuff in 4.5 and mono csprojs
Add way to get to blob client
set Activity client accessor set to private

this isn't related to implementing the blobs client.  Just noticed it
doesn't match the rest of the properties.
Create ObservableBlobClient and interface
Write tests for observable blob client
Add blob client to ObservableGithubClient
Update monoandroid and monotouch csprojs
Enum Encoding
Implement get command and model classes
Write Create method
Create ITreeClient
Strip '-' from strings coming in to be de-serialized.
prepping reactive classes
move out urls to helper class
use updated urls from teams
fixed broken tests

should have been organizations not orgs
implement all the other methods
add teams prop onto the org_client
Use Teams not TeamItem

@Haacked mentioned http://developer.github.com/v3/orgs/teams/#list-teams
may not show all possible fields returned