title: Use Swift 2.2 in Xcode 8?
body: <p>Is it possible to use Swift 2.2 in Xcode 8? </p>
  
  <p>From Xcode 8 release notes: </p>
  
  <blockquote>
    <p>"Xcode 8 supports switching toolchains, such as those from swift.org,
    without relaunching Xcode. (23135507)"</p>
  </blockquote>
  
  <p>I have been trying to find swift 2.2 toolchain on swift.org website but couldn't. Have any one success in configuring Xcode 8 to work with swift 2.2</p>