Update README.md

Author: monkstone

README.md

@@ -1,5 +1,5 @@
 # propane-examples
-Example Sketches for propane-2.3.0 see also [Example-Sketches][examples] for JRubyArt (many of with only need to be class wrapped to run with propane).
+Example Sketches for propane-2.3.1 see also [Example-Sketches][examples] for JRubyArt (many of with only need to be class wrapped to run with propane).
 
 WIP to complete translation from JRubyArt to propane using [this conversion tool][conversion], and by replacing `Processing::Proxy` with `Propane::Proxy`, and unnest some classes as required.