title: iOS 5 - add Splash/Launch view with storyboard
body: <p>i create project with storyboard base uitabbarcontroller,
  i try to add splash view that will show until server request will finsih,
  so i create a new view controller class called "SplashViewControler" with xib file
  and i try to add as subview to windows object.
  the SplashViewControler not show...</p>
  
  <p>any ideas how to Implement splash view with storyboard ?
  thanks</p>