Thank you both for replying.
You don't really need them.
From what I can tell the Adafruit boards don't need them either.
My guess is they only provide a small 10K load, perhaps for stability for an analog input such as A0 on the Arduino.
While I like the idea I cannot find anything in the datahsheet to indicate a small load is necessary.
I believe the second resistor is added to create a voltage divider, allowing for a wider range on the supply (5V-12V) as specified by adafruit.
Unless Kirchhoff and I are on bad terms, that does not play out. Under no load, the 10K, as far as I can tell, has no affect. I believe it reduces the maximum current that can be supplied.
Any other theories?