Added models for EventSpot service
Updated models accordingly to constant contact API responses.
Added EventSpot service.
Added specific methods in ConstantContact public API for events and event fees operations.
Added constants for endpoints and error messages.
Added PATCH method into http layer.
Completed implementation for EventSpotService models and service.
Started to document methods in ConstantContact class.
Added documentation for public Constant Contact API and EventSpotService interface.
Added java doc specifications for all models in EventSpot service
Added new Account Info features.
Completed documentation for EventSpot models, EventSpotService and ConstantContact API class.
Removed Test class.
Generated new Java doc
Updated constant-contact-2.0 jar reference in Android Examples
Merge pull request #28 from halusstefan/master

EventSpotService and AccountService new features