Update README.md

Author: ftomassetti

README.md

@@ -2,6 +2,8 @@
 
 This repository contains a simple transpiler from RPG code to Java.
 
+While this is an example for educational purposes, a commercially-backed solution is available at [RPG2Java](https://rpg2java.com)
+
 This code was written for the tutorial on transpilers at  [https://tomassetti.me/how-to-write-a-transpiler/]( https://tomassetti.me/how-to-write-a-transpiler/).
 
 This project takes advantage of:
@@ -13,4 +15,4 @@ This project takes advantage of:
 ## Acknowledgements
 
 Thanks to Sme.UP and Franco Lombardo for their work on Jariko, the JVM interpreter for RPG.
-We have derived examples from that project.
+We have derived examples from that project.