Update project authors statements to Dartino

pkg/immi_samples/lib/login_presenter.immi

-// Copyright (c) 2015, the Fletch project authors. Please see the AUTHORS file
+// Copyright (c) 2015, the Dartino project authors. Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE.md file.
 
 node HttpsRequest {
   String authorization;
   String url;
   void handleResponse(String data);
 }
 
 node Login {
   Node state;
 }
 
 node LoggedOutState {
   void login(String name, String password);
   String message;
 }
 
 node LoginRequestState {
   HttpsRequest request;
 }
 
 node LoggedInState {
   void logout();
   String user;
 }