Update project authors statements to Dartino

samples/todomvc/ios/TodoMVC/main.m

-// 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.
 
 #import <UIKit/UIKit.h>
 #import "AppDelegate.h"
 
 int main(int argc, char * argv[]) {
   @autoreleasepool {
       return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
   }
 }