title: ReactiveCococa: Module compiled with Swift 2.3 cannot be imported in Swift 3.0
body: <p>I am using carthage v0.18 on mac 10.12 (Sierra).</p>
  
  <p>Cartfile:</p>
  
  <pre><code>github "ReactiveCocoa/ReactiveCocoa
  </code></pre>
  
  <p>I got error:</p>
  
  <p>Module compiled with Swift 2.3 cannot be imported in Swift 3.0: </p>
  
  <p>Do you have any idea how to fix it?</p>