Update the README

README.md

@@ -1,6 +1,6 @@
 <img src="https://github.com/elnormous/ouzel/blob/master/img/ouzel.png" alt="ouzel" width=128>
 
-# Ouzel v0.36
+# Ouzel v0.37
 
 [![Build Status](https://api.travis-ci.org/elnormous/ouzel.svg?branch=master)](https://travis-ci.org/elnormous/ouzel) [![Build Status](https://ci.appveyor.com/api/projects/status/dp8av7iegdjs6xuj?svg=true)](https://ci.appveyor.com/project/elnormous/ouzel)
 
@@ -47,7 +47,7 @@ Windows Phone platform support is under development.
 * Particle systems
 * Resource caching system
 * Localization support via loading string translations and UTF-8 string support
-* Audio engine for sound effect playback
+* Software audio mixer for sound effect playback
 * High DPI support on Windows, macOS, and iOS
 * Easy to install (just pull the repository and it's subrepositories and build it)