iOS 隐藏TabBar

#pragma mark - 隐藏TabBar
- (instancetype)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) self.hidesBottomBarWhenPushed = YES;
    return self;
}