pagingButtons option doesn't seem to be working properly

[Arthur Young]

Either I don't understand how it works, or else the pagingButtons option isn't working properly.  

In this jsFiddle, http://jsfiddle.net/artelliot/vt4uvght/, if I run it without the pagingButtons: 'auto' option it appears to work, but if I uncomment the pagingButtons: 'auto' line, I only get two disabled arrow buttons.

Is it me?

Also, if I pass a number value, it works properly.  I'm thinking that I am not understanding the purpose of the pagingButton option.  If it is set to 'auto', I expect it to compute the number of pages and buttons for me.  Is that correct?

Thanks,

Arthur