add Azul3d

README.md

@@ -215,6 +215,7 @@ Code
 
 #### 3D
 
+* [Azul3D](http://azul3d.org/) - A 3D engine written in Go.
 * [Blitz3D](http://www.blitzbasic.com/Products/blitz3d.php) 3D basic-like programming language for fast 3D desktop games.
 * [Bullet](http://bulletphysics.org/wordpress/) - Real-time physics simulation.
 * [Cinder](http://libcinder.org) - Cinder is a community-developed, free and open source library for professional-quality creative coding in C++.