readme效果图换回压缩过的png

README.md

@@ -16,8 +16,8 @@
  在Xcode8环境下将项目运行在iOS10的设备/模拟器中，访问相册和相机需要额外配置info.plist文件。分别是Privacy - Photo Library Usage Description和Privacy - Camera Usage Description字段，详见Demo中info.plist中的设置。
     
      项目截图 1.Demo首页 2.照片列表页 3.照片预览页 4.视频预览页
-<img src="https://github.com/banchichen/TZImagePickerController/blob/master/TZImagePickerController/ScreenShots/DemoPage.webp" width="40%" height="40%"><img src="https://github.com/banchichen/TZImagePickerController/blob/master/TZImagePickerController/ScreenShots/photoPickerVc.webp" width="40%" height="40%">
-<img src="https://github.com/banchichen/TZImagePickerController/blob/master/TZImagePickerController/ScreenShots/photoPreviewVc.webp" width="40%" height="40%"><img src="https://github.com/banchichen/TZImagePickerController/blob/master/TZImagePickerController/ScreenShots/videoPlayerVc.webp" width="40%" height="40%">
+<img src="https://github.com/banchichen/TZImagePickerController/blob/master/TZImagePickerController/ScreenShots/DemoPage.png" width="40%" height="40%"><img src="https://github.com/banchichen/TZImagePickerController/blob/master/TZImagePickerController/ScreenShots/photoPickerVc.png" width="40%" height="40%">
+<img src="https://github.com/banchichen/TZImagePickerController/blob/master/TZImagePickerController/ScreenShots/photoPreviewVc.png" width="40%" height="40%"><img src="https://github.com/banchichen/TZImagePickerController/blob/master/TZImagePickerController/ScreenShots/videoPlayerVc.png" width="40%" height="40%">
 
 ## 一. Installation 安装