Ok, that's cool, but when I'm going to write my own JSON feed how should it be in order to page the items? because in the link of the example I can't see more than 10 different items but then it renders 7000.
How should I do my JSON? I was trying adding ?page=X to the demo feed to see if it changes page. I don't know how should it work internally my JSON feed to page the items.
So, to recapitulate: what should I do in my .php page that returns the JSON feed? add a parameter called somewhat that renders the different pages? I don't understand how to face this!!