Implementing Yelp API in iPhone Application

I am trying to integrate Yelp Developer APIs into an iPhone app. I took the Objective-C code from https://github.com/Yelp/yelp-api/ and I just dragged the files into my existing Xcode project. I enter my token and keys and I have several errors, most of which are related to ARC Semantics.

I am very new to iOS development and I am not familiar with api integration, so I was wondering what I was doing wrong.

Any help would be greatly appreciated!