title: No options for setting visibility of headers when building an iOS static library
body: <p>I am building an iOS static lib using <strong>Xcode4.4</strong>. But when i come to setting the visibility of headers, I can't see any options. Normally there should be some options like <strong>Public, Private, Project</strong>. Having compared to some other lib projects, I still can't find the problem...</p>
  
  <p>The screenshot of file inspector when I chose <strong>Hellor.h</strong> looks like this:</p>
  
  <p><img src="https://i.stack.imgur.com/bRiEn.png" alt="file inspector view of Hellor.h"></p>