message: Use dict.items() instead of dict.iteritems() for py3 compat
  iteritems() went away in Python 3.
diff: @@ -24,7 +24,7 @@ if __name__ == "__main__":
  output_dir = sys.argv[2]
  - for (name, content) in files.iteritems():
  + for (name, content) in files.items():
  output_file = output_dir + os.path.sep + name
  directory = os.path.dirname(output_file)
  