Further proving I have no life, I have made the changes to the XML document to replace the spaces with underscores.
Just for fun I also added the ability to slice the results. Somewhere after specifying the event you can add a two numbers with a - in between (1-8 for example) as an element in the request and it will only return elements 1-8. This doesn't work on Awards, but that wouldn't make any sense anyway.
For example this new feature can be seen at
http://frcfeed.appspot.com/dt/rankings/1-8/human/ which will return the top 8 teams in Detroit. Enjoy.
Edit: You don't have to specify the beginning OR the end, you can use -8 to represent the top 8 or you could use 30- to return the bottom ten. Anyone who has ever used Python slices should be familiar with this concept.