Unpacking textLabel option

On earlier versions of Xcode, it's necessary to change lines like the following:

```
cell.textLabel!.text = buttons[indexPath.row].valueForKey("buttonName")
```

to 

```
 cell.textLabel.text = buttons[indexPath.row].valueForKey("buttonName")
```

Not sure why. Should probably look into it. Eitherway, XCode will point out the error when compiling.
