Update project authors statements to Dartino

src/vm/tick_sampler_posix.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_POSIX)
 
 #include "src/vm/tick_sampler.h"
 
 #include <errno.h>
 #include <stdio.h>
 #include <sys/time.h>
@@ skipping 214 matching lines @@
   }
 
   processor->Join();
   delete queue;
   delete processor;
 }
 
 }  // namespace fletch
 
 #endif  // FLETCH_TARGET_OS_POSIX