title: Add UiViewController to Root View Controller
body: <p>How do I add the sidebar to <code>self.viewcontroller</code> to init the content.
  <code>self.viewController</code> is a rootViewController</p>
  
  <pre><code>- (void)setupViewControllers {
      UIViewController *firstViewController = [[BdbHomeListViewController alloc] init];
      UIViewController *firstNavigationController = [[UINavigationController alloc]
                                                     initWithRootViewController:firstViewController];
  
      UIViewController *secondViewController = [[BdbExpiredListViewController alloc] init];
      UIViewController *secondNavigationController = [[UINavigationController alloc]
                                                      initWithRootViewController:secondViewController];
  
      UIViewController *thirdViewController = [[BdbHistoryListViewController alloc] init];
      UIViewController *thirdNavigationController = [[UINavigationController alloc]
                                                     initWithRootViewController:thirdViewController];
  
      UIViewController *forthViewController = [[BdbChatRoomListViewController alloc] init];
      UIViewController *forthNavigationController = [[UINavigationController alloc]
                                                     initWithRootViewController:forthViewController];
  
      UIViewController *fithViewController = [[RightViewController alloc]init];
      UIViewController *fithNavigationController = [[UINavigationController alloc]
                                                     initWithRootViewController:fithViewController];
  
      RDVTabBarController *tabBarController = [[RDVTabBarController alloc] init];
      [tabBarController setViewControllers:@[firstNavigationController, secondNavigationController,
                                             thirdNavigationController,forthNavigationController,fithNavigationController]];
  
      TheSidebarController *sidebar = [[TheSidebarController alloc] initWithContentViewController:self.viewController rightSidebarViewController:fithNavigationController];
      self.viewController = tabBarController;
  
      [self customizeTabBarForController:tabBarController];
  }
  </code></pre>