Objective-C data request methods an playlist creation based on Spotify IOS public API. Features:
- User login access, session management and user information request.
- Artist search, including artist image URL request.
- Track search by song name, and Spotify track creation from track name.
- Spotify playlist creation from an set of tracks.
It requires AFNetworking library (https://github.com/AFNetworking/AFNetworking)