title: Convert a static library target into a framework target in an Xcode project
body: <p>I have a an Xcode project which produces a static library. My team plans all new development in Swift. <a href="http://openradar.appspot.com/17233107">It is not possible to add Swift files to the static library project</a>. We are dropping support for iOS 7, so it is now possible to include frameworks in our iOS app. Therefore, I intend to convert my static library project to a framework project.</p>
  
  <p>I have looked but I cannot find any tools or advice for how to perform this conversion. The static library is large (more than 100 .m files).</p>
  
  <p>I'm hoping for a better answer than create a new parallel framework target. I've attempted this twice. The first time as a swift target, but I wasn't able to easily import all the Objective C files. Next, as an Objective C target, but there is no .pch anymore.</p>