Update project authors statements to Dartino

src/vm/thread_cmsis.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.
 
 #if defined(FLETCH_TARGET_OS_CMSIS)
 
 #include "src/vm/thread.h"  // NOLINT we don't include thread_posix.h.
 
 #include <errno.h>
 #include <stdio.h>
 
@@ skipping 55 matching lines @@
 
   if (thread == NULL) {
     FATAL("osThreadCreate failed\n");
   }
   return ThreadIdentifier(thread);
 }
 
 }  // namespace fletch
 
 #endif  // defined(FLETCH_TARGET_OS_CMSIS)