Update README.md

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DreamPiggy 2020-12-14 15:11:35 +08:00
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@ -216,6 +216,8 @@ See more documentation in [SDWebImage Wiki - Coders](https://github.com/SDWebIma
The WebP codec [libwebp](https://developers.google.com/speed/webp/docs/api) we use, supports some advanced control options for encoding/decoding. You can pass them to libwebp by using the wrapper top level API:
+ Objective-C
```objective-c
UIImage *image;
SDImageCoderOptions *options = @{SDImageCoderEncodeWebPMethod: @(0), SDImageCoderEncodeWebPAlphaCompression: @(100)};