title: UIKit/UIKit.h file not found
body: <p>I have installed the <code>Xcode 6.0.1</code> and <code>Xcode 5.1.1</code> in my system.
  When I create project in <code>Xcode 6.0.1</code> it is working fine, when I create project in <code>Xcode 5.1.1</code> and build the same getting <strong>Proprocessor issue as <code>UIKit/UIKit.h file not found</code>.</strong></p>
  
  <p>I tried to add the framework explicitly in Build phases and there also the <code>UIKit</code> is not found.
  Same for <code>Foundation.framework</code> also.</p>
  
  <p>This issue is started once after installing the <code>Xcode 6.</code></p>
  
  <p>Help appreciated.</p>