Update project authors statements to Dartino

src/shared/platform_lk.h

-// 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.
 
 #ifndef SRC_SHARED_PLATFORM_LK_H_
 #define SRC_SHARED_PLATFORM_LK_H_
 
 #ifndef SRC_SHARED_PLATFORM_H_
 #error Do not include platform_lk.h directly; use platform.h instead.
 #endif
 
@@ skipping 96 matching lines @@
   semaphore_t sem_;
   mutex_t internal_;
   int waiting_ = 0;
 };
 
 }  // namespace fletch
 
 #endif  // defined(FLETCH_TARGET_OS_LK)
 
 #endif  // SRC_SHARED_PLATFORM_LK_H_