title: Appending NSDictionary to other NSDictionary
body: <p>I have one <code>NSDictionary</code> and it loads up <code>UITableView</code>. If a user scrolls more and more, I call API and pull new data. This data is again in the form of an <code>NSDictionary</code>. Is it possible to add the new <code>NSDictionary</code> to the existing one?</p>