Error in example.py writing to stdout with example.py

[d0c-s4vage]

Discovered looking into #26

Traceback (most recent call last):
  File "example.py", line 96, in <module>
    main(sys.argv[1:])
  File "example.py", line 91, in main
    seed          = args.seed,
  File "example.py", line 37, in generate
    output.write(res)
TypeError: write() argument must be str, not bytes