title: Vapor Web Framework: error: Swift does not support the SDK 'MacOSX10.11.sdk'
body: <p>When trying to build Vapor 0.13 (and likely other versions) w/ Swift 3 and Xcode </p>
  
  <p><strong>Environment</strong></p>
  
  <pre><code>Vapor: 0.13
  Swift: 3
  Snapshot: DEVELOPMENT-SNAPSHOT-06-20-A
  Xcode: 8
  </code></pre>
  
  <p>The following error is often the first result:</p>
  
  <blockquote>
    <p>error: Swift does not support the SDK 'MacOSX10.11.sdk'</p>
  </blockquote>