let session =NSURLSession(NSURLSessionConfiguration.defaultSessionConfiguration()) iflet url =NSURL(string: “http://url”) {let request =NSURLRequest(URL: url)
let task = session.downloadTaskWithRequest(request) { (localURL, response, error) in
 dispatch_async(dispatch_get_main_queue()) {
/* I want to do something in the UI here, can I? */
}
}
task.resume()
}