class func tryLogin(username: String, password: String) -> (Bool) {
        print("tryLogin CALLED")
        var isTrySucceeded: Bool = false

        let loginRequest = NSMutableURLRequest(URL: NSURL(string: MMTHTTPLoginRequest.requestURL)!,
                cachePolicy: .UseProtocolCachePolicy,
                timeoutInterval: 10.0)
        loginRequest.HTTPMethod = "POST"
        loginRequest.allHTTPHeaderFields = MMTHTTPLoginRequest.header
        loginRequest.HTTPBody = MMTHTTPLoginRequest(username: username, password: password).postData
        Alamofire.request(loginRequest).response { (request, response, data, error) in

            dispatch_async(dispatch_get_main_queue()){

                if (response?.statusCode)! == 200 {
                    print("Login SUCCEEDED")
                    //Login Succeeded
                    let json = JSON(data: data!)
                    UserData.accessToken = json["access_token"].rawString()!
                    UserData.refreshToken = json["refresh_token"].rawString()!
                    //SegueManager.triggerSegue(LoginViewController())
                    isTrySucceeded = true
                }else{
                    print("Login FAILED")
                    //Login Failed
                    print((response?.statusCode)!)
                    print(error)
                    //Create ALERT
                    isTrySucceeded = false
                }
            }
        }.resume()
        print("Try is (isTrySucceeded)")
        return isTrySucceeded
    }

tryLogin CALLED
Try is false
Login SUCCEEDED