title: There is no .xib file when I create a new "Empty Application" in XCode
body: <p>I am working through the Big Nerd Ranch Guide (2nd Ed) for iOS Programming using Xcode version 4.2.</p>
  
  <p>For the very first project I'm asked to create a new project which is a "Window-based Application" the description for which reads "This template provides a starting point for any application.  It provides just an application delegate and a window".  The "Window-based Application" option was not available to me in XCode 4.2 but I did see the option to create a "New Empty Application" which has the same description ("This template provides a starting point for any application.  It provides just an application delegate and a window")</p>
  
  <p>When I create the project I'm supposed to have a MainWindow.xib file but that does not show up at all in my project?  Help please</p>