Update project authors statements to Dartino

src/shared/natives_to_json.cc

-// 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.
 
 #include <stdio.h>
 #include <sys/errno.h>
 
 #include "src/shared/assert.h"
 
 #include "src/shared/names.h"
 #include "src/shared/natives.h"
@@ skipping 41 matching lines @@
             strerror(errno));
     return 1;
   }
   return 0;
 }
 
 }  // namespace fletch
 
 // Forward main calls to fletch::Main.
 int main(int argc, char** argv) { return fletch::Main(argc, argv); }