Adapt iTunesParser.py for Python 3

iTunesParser.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 
 """
---> Parse library and just do JSON
+--> Parse library and just do JSON adapted for Elasticsearch
 
 iTunes Graph Parser
 
@@ -235,5 +235,5 @@ if __name__ == '__main__':
         print(output)
     else:
         with io.open(options.output, 'wb') as outfile:
-            outfile.write(output)
+            outfile.write(bytes(output, 'UTF-8'))
         print('JSON data written to: ' + options.output)