title: xcodebuild can't build when no physical iOS
body: <p><strong>xcodebuild manual:</strong></p>
  
  <p>Some actions (such as building) may be performed without an actual device present.  To build against a
       platform generically instead of a specific device, the destination specifier may be prefixed with the
       optional string <strong>"generic/"</strong>, indicating that the platform should be targeted generically.  An example of
       a generic destination is the <strong>"iOS Device"</strong> destination displayed in Xcode's UI when no physical iOS
       device is present.</p>
  
  <p><strong>try it:</strong></p>
  
  <blockquote>
    <p>xcodebuild -scheme Test -destination "platform=iOS,name=generic/iOS" <br>
     xcodebuild: error: Was unable to find a destination matching the arguments to the -destination flag:<br>
        The requested device could not be found because no available devices matched the request.</p>
  </blockquote>