amamput

    let url = NSURL(string: "https://yourUrl.com") //Remember to put ATS exception if the URL is not https
    let request = NSMutableURLRequest(URL: url!)
    request.addValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type") //Optional
    request.HTTPMethod = "PUT"
    let session = NSURLSession(configuration:NSURLSessionConfiguration.defaultSessionConfiguration(), delegate: nil, delegateQueue: nil)
    let data = "username=self@gmail.com&password=password".dataUsingEncoding(NSUTF8StringEncoding)
    request.HTTPBody = data

    let dataTask = session.dataTaskWithRequest(request) { (data, response, error) -> Void in

        if error != nil {

            //handle error
        }
        else {

            let jsonStr = NSString(data: data!, encoding: NSUTF8StringEncoding)
            print("Parsed JSON: '\(jsonStr)'")
        }
    }
    dataTask.resume()