update readme.

boolangery · boolangery · commit 7022b53b53da · 2020-11-11T10:59:11.000+01:00
diff --git a/README.rst b/README.rst
@@ -130,6 +130,8 @@ Alternatively, you can use a node visitor:
 Rendering lua code
 ------------------------------------------------------------------------------
 
+.. warning:: Experimental feature
+
 .. code-block:: python
 
     exp = Chunk(Block([
