Update project authors statements to Dartino

platforms/stm/stm.gyp

-# 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.
 
 {
   'targets': [
      {
       'target_name': 'demos',
       'type': 'none',
       'dependencies': [
         'stm32_cube_f7_demos.gyp:STemWin_HelloWorld',
@@ skipping 11 matching lines @@
     },
     {
       'target_name': 'event_handler_test',
       'type': 'none',
       'dependencies': [
         'event_handler_test/event_handler_test.gyp:event_handler_test',
       ],
     },
   ],
 }