title: how to remove(or not use) launch screen storyboard in xcode with swift
body: <p>i make some app.
  the app does not using storyboard. only prommatically.</p>
  
  <p>also i want to not using launch screen.</p>
  
  <p>so, delete launch row in plist.
  The result is.... top and bottom screen is black space...
  and start black screen...</p>
  
  <p>how to remove launch screen?? 
  (or how to make launch screen using code prommatically?)</p>
  
  <p>i want the app is ...
    app icontouch ->  mainview(collectionview) -> window addsubviw  loading animation(UIView Anima...)....-> dismiss -> mainview</p>
  
  <p>now....
  app icontouch -> launch screen!!!!! -> mainview(collectionview) -> window addsubviw  loading animation(UIView Anima...).....-> dismiss -> mainview</p>