Update project authors statements to Dartino

tests/servicec/input_files/no_multiple_union_1.idl

-// 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 file.
 
 service Foo {
 }
 
 struct Bar {
   U1 union1;
   U2 union2;
 }
 
 struct U1 {
   union {
     int32 baz;
     uint8 zap;
   }
 }
 
 struct U2 {
   union {
     int64 pop;
     int16 win;
   }
 }