Update project authors statements to Dartino

tools/raspberry-pi2/raspbian_prepare.py

 #!/usr/bin/env python
 #
-# 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 file.
 #
 
 # Prepares a raspbian image to support fletch. We use qemu to edit the image
 # since this allows us to run commands and push data to the image without using
 # sudo. This script will "edit" the image in place, so take a copy before using.
 
 import optparse
 import os
@@ skipping 158 matching lines @@
     # The process did not shut down, kill it
     print 'Qemu did not shut down nicely, killing it'
     self.process.terminate(force=True)
     self.process.read()
     self.logfile.close()
     # We should actually throw here, but since we can't nicely shut down we
     # allow this for now, see issue 277
 
 if __name__ == '__main__':
   sys.exit(Main())