Addressed some build warnings in sample app

Author: michaeltyson

TPKeyboardAvoidingSample/SecondViewController.m

@@ -104,8 +104,8 @@ - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(N
         cell.selectionStyle = UITableViewCellSelectionStyleNone;
     }
 
-    cell.textLabel.text = [NSString stringWithFormat:@"Order %d", indexPath.row];
-    ((UITextField*)cell.accessoryView).placeholder = [NSString stringWithFormat:@"%d bananas", indexPath.row];
+    cell.textLabel.text = [NSString stringWithFormat:@"Order %d", (int)indexPath.row];
+    ((UITextField*)cell.accessoryView).placeholder = [NSString stringWithFormat:@"%d bananas", (int)indexPath.row];
 
     return cell;
 }