Update Esterel compiler info in README.md

README.md

@@ -15,7 +15,9 @@ The language is presented in the Esterel Primer (PDF).
   + [Project Plan](https://www1.cs.columbia.edu/~sedwards/classes/2002/w4995-02/vasee-lit.pdf)
   + [Final Report](https://www1.cs.columbia.edu/~sedwards/classes/2002/w4995-02/vasee-final.pdf)
 * Potential alternate compiler – [CEC: The Columbia Esterel Compiler](https://www1.cs.columbia.edu/~sedwards/cec/) (open source)
-  + [A fork updated to work with CMake](https://github.com/dilawar/cec-esteral)
+  + “Currently [only] supports a subset of so-called Esterel V5”
+  + Might not support the scLego extensions
+  + [A fork of CEC updated to work with CMake](https://github.com/dilawar/cec-esteral)
 * Related project - [Ministrel](https://github.com/acorrenson/Ministrel): A “toy” synchronous language for reactive programming highly inspired by Esterel.