[rest-practices] Pagination API

[Bob McWhirter]

> I agree that the paging api could use simple query parameters, but multi-column sorting (example sent previously), field selections (a la LinkedIn API), and ad hoc filter expressions all require parentheses.  Once the infrastructure has been developed to support parentheses, using them for paging seems better

The simple case of Bob the Developer hacking URLs, though, to see what he can see, simple pagination is still better.  Even if the server can support parens, my fingers don't desire to type them.

	-Bob