Update README.md (#646)

Add mention of Dart native bindings
diff --git a/README.md b/README.md
index 6b9b0cf..f832bd4 100644
--- a/README.md
+++ b/README.md
@@ -81,3 +81,5 @@
 Hand ported [decoder / encoder](https://github.com/dominikhlbg/BrotliHaxe) in haxe by Dominik Homberger. Output source code: JavaScript, PHP, Python, Java and C#
 
 7Zip [plugin](https://github.com/mcmilk/7-Zip-Zstd)
+
+Dart [native bindings](https://github.com/thosakwe/brotli)