title: Architecture issue in iOS
body: <p>I'm using Reachability on my project to get the type of connection used, but an error has ocurred.</p>
  
  <pre><code>Undefined symbols for architecture i386:
    "_OBJC_CLASS_$_Reachability", referenced from:
        objc-class-ref in ContributionViewController.o
  ld: symbol(s) not found for architecture i386
  clang: error: linker command failed with exit code 1 (use -v to see invocation)
  </code></pre>
  
  <p>I don't know what to do... my project is for iOS 4.3 and I've never had this kind of problem before.</p>
  
  <p>Thx</p>