title: symbol(s) not found for architecture armv7
body: <p>I am integrate LinkedInIOS Login Demo with my current application from: 
  <a href="https://github.com/jeyben/IOSLinkedInAPI" rel="nofollow">https://github.com/jeyben/IOSLinkedInAPI</a></p>
  
  <p>Also add supporting classes of "AFNetworking".</p>
  
  <p>And It's gives me an error as mention below:</p>
  
  <pre><code>Undefined symbols for architecture armv7:
    "_kUTTagClassMIMEType", referenced from:
        _AFContentTypeForPathExtension in AFURLRequestSerialization.o
    "_kUTTagClassFilenameExtension", referenced from:
        _AFContentTypeForPathExtension in AFURLRequestSerialization.o
    "_UTTypeCreatePreferredIdentifierForTag", referenced from:
        _AFContentTypeForPathExtension in AFURLRequestSerialization.o
    "_UTTypeCopyPreferredTagWithClass", referenced from:
        _AFContentTypeForPathExtension in AFURLRequestSerialization.o
  ld: symbol(s) not found for architecture armv7
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>Please suggest me any solution about it. My deployment target was 5.0.</p>