Add Avast to "Who's using YARA".
Avast is using YARA e.g. in via
@@ -50,6 +50,7 @@ helpful extension to YARA developed and open-sourced by Bayshore Networks.
* [ActiveCanopy](https://activecanopy.com/)
* [Adlice](http://www.adlice.com/)
* [AlienVault](https://otx.alienvault.com/)
+* [Avast](https://www.avast.com/)
* [BAE Systems](http://www.baesystems.com/home?r=ai)
* [Bayshore Networks, Inc.](http://www.bayshorenetworks.com)
* [BinaryAlert](https://github.com/airbnb/binaryalert)
