title: Swift use of unresolved identifier `create` in RxSwift
body: <p>I'm starting to learn Swift and I'm implementing an Observable (using RxSwift) to simplify Network calls via AlamoFire in an OSX app. </p>
  
  <p>Imports:</p>
  
  <pre><code>import RxSwift
  import RxCocoa
  import Alamofire
  </code></pre>
  
  <p>Method:</p>
  
  <p>The create identifier below is reporting:
  <strong>Use of unresolved identifier <code>create</code></strong></p>
  
  <pre><code>func getAPI(body: String) -&gt; Observable&lt;AnyObject?&gt; {
      return create { observer in
          let request = AlamoFireXMLPostRequest(body)
              .responseData(completionHandler: { request, response, data, error in
                  if ((error) != nil) {
                      observer.on(.Error(error!))
                  } else {
                      observer.on(.Next(getXMLfromFreshbooksResponse(response)))
                      observer.on(.Completed)
                  }
              })
          return AnonymousDisposable {
              request.cancel()
          }
      }
  }
  </code></pre>
  
  <p>CocoaPods:</p>
  
  <pre><code># Uncomment this line to define a global platform for your project
  # platform :ios, '9.0'
  # Needed by SWXMLHash
  source 'https://github.com/CocoaPods/Specs.git'
  platform :osx, '10.10'
  
  target 'Tractor Beam' do
    # Comment this line if you're not using Swift and don't want to use dynamic frameworks
    use_frameworks!
  
    # Pods for Tractor Beam
    pod 'Alamofire', '~&gt; 3.4'
  
    # Convert HTTP AF Responses to XML    
    pod 'AlamofireXmlToObjects'
    pod 'SWXMLHash', '~&gt; 2.5.0'
  
    # Rx
    pod 'RxSwift', '~&gt; 2.6.0'
    pod 'RxCocoa', '~&gt; 2.6.0'
  
    target 'Tractor BeamTests' do
      inherit! :search_paths
      # Pods for testing
    end
  
    target 'Tractor BeamUITests' do
      inherit! :search_paths
      # Pods for testing
    end
  
  end
  
  #post_install do |installer|
  #    installer.pods_project.targets.each do |target|
  #        target.build_configurations.each do |config|
  #            config.build_settings['SWIFT_VERSION'] = '3.0'
  #            config.build_settings['MACOSX_DEPLOYMENT_TARGET'] = '10.10'
  #        end
  #    end
  #end
  </code></pre>