Updates to iOS8
Adds initial implementation for Getty Images integration
Adds NSCoding support
Updates pod spec adding new dependency (GROAuth2SessionManager) and downgrading AFNetworking for compatibility sake (will bump as soon as GROAuth2SessionManager upgrades)
Updates pod files
Adds consumer key and secret for Getty Images test client
Implements authentification logic for Getty Images support, in a transparent and flexible way
Enables auth params exclusively for Getty Images
Minor refactoring
Cleans up keynote file
Updates the services image asset
Update README.md
Adds tests for Getty images parsing
Adds convinience method for registering a service without specifying the free subscription type
Updates the sample project with latest API changes
Exposes initializer for DZNPhotoMetadata
Adds Kiwi BDD testing framework to sample project + changes parsing test completly
Adds Tests target resources
Adds missing Bing Images parsing test
Merge pull request #52 from dzenbot/getty-images

Adds Getty Images integration