title: swift version 2.3 is not working with any Xcode?
body: <p>When I open project, it is showing conversion of swift if I do conversion then it is showing errors in available framework in pod. 
  If I do "pod update" but still it is showing me lots of errors in project. 
  Most errors related to Alamofire and Object mapper. </p>
  
  <p>If I do not do conversions then it is showing below: </p>
  
  <p>“Use Legacy Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift. Use the [Edit > Convert > To Current Swift Syntax…] menu to choose a Swift version or use the Build Settings editor to configure the build setting directly.
  “Use Legacy Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift. Use the [Edit > Convert > To Current Swift Syntax…] menu to choose a Swift version or use the Build Settings editor to configure the build setting directly.</p>
  
  <pre><code>target 'JaClassified' do
  
  pod 'Alamofire'
  pod 'AlamofireObjectMapper'
  pod 'ObjectMapper'
  pod 'DKImagePickerController'
  pod 'Kingfisher'
  pod 'Auk'
  pod 'GoogleMaps'
  pod 'PayPal-iOS-SDK'
  end
  
  target 'JaClassifiedTests' do
  
  end
  
  target 'JaClassifiedUITests' do
  
  end
  </code></pre>
  
  <p>Above is my pod file code I didn't specify versions so it will update to latest version. 
  The current code written in Swift 2.3. I have tried it on Xcode 7.x but not working showing errors do pod updation but still getting same. 
  Also in Xcode 8.x versions getting same. 
  I have tried same code on different machines till now I have tried on 7 different Mac machines but not getting results or error free app. </p>
  
  <p>Can any one help me </p>