Update project authors statements to Dartino

mbed_targets.gypi

-# 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.
 
 # TODO(ahe): Move this file elsewhere?
 
 {
   'includes': [
     'common.gypi'
   ],
 
@@ skipping 12 matching lines @@
       'DebugMBED': {
         'inherit_from': [
           'fletch_base', 'fletch_debug', 'fletch_mbed', 
           'fletch_disable_live_coding', 'fletch_disable_ffi', 
           'fletch_disable_native_processes',
           'fletch_disable_print_interceptors'],
       },
     },
   },
 }