Steps to Reproduce

• Visit the documentation and read information about the curated method.
• Call Unsplash::Photo.curated

Observed Behaviour

Unsplash::Photo.curated
=> NoMethodError: undefined method `curated' for Unsplash::Photo:Class

Expected Behaviour

current docs say that you authenticate like:

var token = "xxxx"
var client = UnsplashClient { request -> [String: String] in
    return [ "Authorization": "Bearer \(token)"]
}

this should be

var token = "xxxx"
var client = UnsplashClient { request -> [String: String] in
    return [ "Authorization": "Client-ID \(token)"]
}

not sure when this changed, but the u

I like this simple but nice feature.
Perhaps a nice addition would be to customize the url.
Or maybe even better to use the api from unsplash for collections or searches