Add link to YourKit for OSS licenses

Author: gzm0

assets/img/supporters/yourkit.png

@@ -47,6 +47,13 @@ See which companies are using Scala.js:
 [![Hivemind Technologies](../assets/img/adopters/hivemindtechnologies.png)](https://hivemindtechnologies.com)
 [![HeartAI](../assets/img/adopters/heartai.png)](https://heartai.net)
 
+## Supporters
+
+Companies that support Scala.js development:
+
+<!-- YourKit provides us with OSS licenses for the YourKit Java Profiler -->
+[![YourKit](../assets/img/supporters/yourkit.png)](https://www.yourkit.com/)
+
 ## Built with Scala.js
 
 Want to get a peek at some web applications that have been built with Scala.js?