title: Xcode : Adding a project as a build dependency
body: <p>Im playing around with the <a href="https://github.com/soundcloud/cocoa-api-wrapper/tree/oauth2" rel="noreferrer">soundcloud api</a>, in its instructions it says to</p>
  
  <ul>
  <li>drag SoundCloudAPI.xcodeproj into your project</li>
  <li>add it as a build dependency</li>
  </ul>
  
  <p>I can drag the project in pretty easily, but how does one accomplish the next step?</p>