UITableView and UITableViewController - iOS Programming: The Big Nerd Ranch Guide - page 288

An empty table view is a sad table view. You should give it some rows to display. Re-
member the BNRItem class you wrote in Chapter 3 ? Now you're going to use that class
again: each row of the table view will display an instance of BNRItem . Locate the header
and implementation files for BNRItem ( BNRItem.h and BNRItem.m ) in Finder and
drag them onto Homepwner 's project navigator. Make sure you use the files from
Chapter 3 , not the unfinished files from Chapter 2 .
When dragging these files onto your project window, select the checkbox labeled Copy
items into destination group's folder when prompted. This will copy the files from their
current directory to your project's directory on the filesystem and add them to your pro-
ject.