Sample script can't handle unicode character

[ltomuta]

The sample/utility script Write user interface to a file API Sample fails on line 65 when attempting to write custom UI elements that contain unicode characters.

The script should be modified to save the info in unicode format, like so:
Add 

import codecs

Replace line 65

        f = open(filename, 'w')

with

        f = codecs.open(filename, 'w', "utf-8-sig")

Done!