title: FacebookSDK and Bolts conflicting each other (duplicate symbols) on build
body: <p>Not sure what is the problem.. 91 symbols found duplicated for armv7</p>
  
  <p>Am on a Swift project targeting iOS 7.1.</p>
  
  <p>Both frameworks are of the <strong>latest versions</strong>.</p>
  
  <p>Tried cleaning project and removing derived data., but to no avail.</p>
  
  <pre><code>duplicate symbol _OBJC_IVAR_$_BFAppLinkTarget._URL in:
      /Users/rynecheow/Development/THPopQuiz/Frameworks/FacebookSDK.framework/FacebookSDK(BFAppLinkTarget.o)
      /Users/rynecheow/Development/THPopQuiz/Frameworks/Bolts.framework/Bolts(BFAppLinkTarget.o)
  duplicate symbol _OBJC_IVAR_$_BFAppLinkTarget._appStoreId in:
      /Users/rynecheow/Development/THPopQuiz/Frameworks/FacebookSDK.framework/FacebookSDK(BFAppLinkTarget.o)
      /Users/rynecheow/Development/THPopQuiz/Frameworks/Bolts.framework/Bolts(BFAppLinkTarget.o)
  duplicate symbol _OBJC_IVAR_$_BFAppLinkTarget._appName in:
      /Users/rynecheow/Development/THPopQuiz/Frameworks/FacebookSDK.framework/FacebookSDK(BFAppLinkTarget.o)
      /Users/rynecheow/Development/THPopQuiz/Frameworks/Bolts.framework/Bolts(BFAppLinkTarget.o)
  </code></pre>