Update Related projects (#565)

Add BrotliHaxe
diff --git a/README.md b/README.md
index a59bb58..b092e4f 100644
--- a/README.md
+++ b/README.md
@@ -82,3 +82,5 @@
 Independent [decoder](https://github.com/madler/brotli) implementation by Mark Adler, based entirely on format specification.
 
 JavaScript port of brotli [decoder](https://github.com/devongovett/brotli.js). Could be used directly via `npm install brotli`
+
+Hand ported [decoder / encoder](https://github.com/dominikhlbg/BrotliHaxe) in haxe by Dominik Homberger. Output source code: JavaScript, PHP, Python, Java and C#