WIP refactoring network logic out of hubkit into http client
initial refactoring of networking logic
added nsurlprotocol stub to begin testing networking layer
refactored canned date and added canned datasource
added test coverage for HKHTTPClient
renamed user facing methods in HubKit to be a little more readable
refactored shared instances to hubkit
Merge pull request #32 from jnjosh/master

Extracted Network Logic out of HubKit, Added Tests for HTTPClient