func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
    // Create a new config (we recommend you subclass BaseConfig and initialize it with the right values for reusability)
    let config = BaseConfig()
    config.clientId = "<your client id>"
    config.clientSecret = "<your client secret>"
    
    // Store the oAuth token ... we didn't really want to do this for you ;)
    GithubSelector(configuration: config, url: url).didReceiveAuthToken = { token in
        // Store received oAuth token locally (maybe keychain?)
    }

    return true
}

let selector = GithubSelector()

// Create a new config
let config = BaseConfig()
config.clientId = "<your client id>"
config.clientSecret = "<your client secret>"

selector.logout = {
    // User requested logout, delete locally stored oAuth token (probably from keychain?)
}

// Get your token if you got any (where did you store it? Hope not user defaults!)
if let token = getYourToken() {
    config.clientToken = token
}

// User has finally decided to select a file
selector.didSelectFile = { file in
    /*
    Access the following on your returned file
    
    public let data: Data
    public let name: String
    public let url: String
    public let mode: String
    public let size: Int
    */
}

// Present your brand new Github file selector to the user
selector.present(inViewController: self, configuration: config)