1. 新建一个Storyboard取名为OtherStoryboard.storyboard
2. 使用下面代码加载
UIStoryboard *newStoryboard = [UIStoryboard storyboardWithName:@"OtherStoryboard" bundle:nil];
3. 使用scene identifier获取view controller
instantiateViewControllerWithIdentifier:
(scene identifier便是你在身份查看器(identity inspector)中设置的Storyboard ID)
