uses new iOS 9.0 and UICollectionView and UICollectionViewCell for Popular Photos in 500px
Xcode 7.1
Swift 2.1
Deployment Target = iOS 9.1
Base SDK = iOS 9.1
The Photos Database API: https://api.500px.com/v1/photos?feature=popular&consumer_key=MbhaNsMfhlJVGHvQzXBJhP4DsIGHkj6gkdLtRKBl
500px: https://github.com/500px/api-documentation/blob/master/endpoints/photo/GET_photos.md
json converter: https://jsonformatter.curiousconcept.com
special thanks to Essan Parto
Alamofire Tutorial Part 1: Getting Started http://www.raywenderlich.com/85080/beginning-alamofire-tutorial
Alamofire Tutorial Part 2: Progress and Caching http://www.raywenderlich.com/87595/intermediate-alamofire-tutorial