HDFS NameNode Username Hack

I created a userscript to override the username when (when programmatically detectible) to allow you to read HDFS directories and files that aren't world readable.  Nothing fancy here, you could edit the URL yourself, this just makes it easier.  The script is hosted here: http://userscripts.org/scripts/show/179132, and the source is available here: https://gist.github.com/keeganwitt/6810986.