Update project authors statements to Dartino

pkg/immi_samples/lib/ios/ImmiSamples/ImagePresenter.mm

-// 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 "ImagePresenter.h"
 
 @interface ImagePresenter ()
 @property id<ImageCache> imageCache;
 @end
 
 @implementation ImagePresenter
@@ skipping 61 matching lines @@
                                               BOOL* stop) {
             [imagePresenter presentImageFromData:imageData];
           }];
         });
       });
     }
   }
 }
 
 @end