UITableViewController initializer with support for SVPullToRefresh

initSVPullToRefresh.m

- (id)init {
    self = [super initWithStyle:UITableViewStyleGrouped];
    if (self) {
        // add the handler to the UITableView
        [[self tableView] addPullToRefreshWithActionHandler:^{
            // do something, in this case add a new item to our data source
            [self addNewItem:nil];
            // tell pull-to-refresh to stop animating
            [[[self tableView] pullToRefreshView] stopAnimating];
        }];
    }
    
    return self;
}