How to add your storyboard (instead of .xib) to an existing application?

Question

Objective-C

I downloaded an application for ios - rss parser.
On startup - TableViewController and refresh button.
You need to make a client for a news site.
How to attach a Tab Bar Controller to all this (live in the first tab, in the second tab Table View Controller with rss feed).
There is no storyboard in the application (instead, a .xib file).

Answer 1

File -> New File -> Storyboard [Adds a new Storyboard]

Answer 2

It's not very clear what exactly the problem is. If you want the storyboard to be loaded by default when the application starts, you need to select your storyboard as the Main Storyboard in the target settings (removing all the code related to creating view controllers from the -applicationDidFinishLaunching:... method of your application delegate), or manually load the storyboard in this method, create the desired view controller and use it.