Fix AV extension imports

MediaSlideshow.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = "MediaSlideshow"
-  s.version          = "2.0.4"
+  s.version          = "2.0.5"
   s.summary          = "Image (and optionally, video) slideshow written in Swift with circular scrolling, timer and full screen viewer"
 
 # This description is used to generate tags and improve search results.

MediaSlideshow/Classes/AV/AVPlayerView.swift

@@ -7,6 +7,7 @@
 
 import AVFoundation
 import Foundation
+import UIKit
 
 open class AVPlayerView: UIView {
     open override class var layerClass: AnyClass {

MediaSlideshow/Classes/AV/ImageAndVideoSlideshowDataSource.swift

@@ -9,6 +9,8 @@ import Foundation
 #if SWIFT_PACKAGE
 import MediaSlideshow
 #endif
+import UIKit
+
 
 open class ImageAndVideoSlideshowDataSource: NSObject, MediaSlideshowDataSource {
     public enum Source {

MediaSlideshow/Classes/AV/MediaSlideshowAVSlide.swift

@@ -10,6 +10,7 @@ import AVKit
 #if SWIFT_PACKAGE
 import MediaSlideshow
 #endif
+import UIKit
 
 public class MediaSlideshowAVSlide: AVPlayerView, MediaSlideshowSlide {
     private let source: AVSource

MediaSlideshow/Classes/AV/UIView+AV.swift

@@ -7,6 +7,7 @@
 
 import AVFoundation
 import Foundation
+import UIKit
 
 extension UIView {
     func embed(_ view: UIView) {

README.md

@@ -14,14 +14,14 @@ MediaSlideshow is available through [CocoaPods](http://cocoapods.org). To instal
 it, simply add the following line to your Podfile:
 
 ```ruby
-pod 'MediaSlideshow', '~> 2.0.4'
+pod 'MediaSlideshow', '~> 2.0.5'
 ```
 
 ### Carthage
 To integrate MediaSlideshow into your Xcode project using Carthage, specify it in your Cartfile:
 
 ```ruby
-github "pm-dev/MediaSlideshow" ~> 2.0.4
+github "pm-dev/MediaSlideshow" ~> 2.0.5
 ```
 
 Carthage does not include InputSources for external providers (due to dependency on those providers) so you need to grab the one you need from `MediaSlideshow/Classes/InputSources` manually.