Update README.md

added link to Mathematica implementation

README.md

@@ -16,6 +16,7 @@ _Mario Krenn, Florian Haese, AkshatKumar Nigam, Pascal Friederich, Alan Aspuru-G
 [A community paper with 31 authors on SELFIES and the future of molecular string representations](https://arxiv.org/abs/2204.00056).\
 [Blog explaining SELFIES in Japanese language](https://blacktanktop.hatenablog.com/entry/2021/08/12/115613)\
 **[Code-Paper in February 2023](https://pubs.rsc.org/en/content/articlelanding/2023/DD/D3DD00044C)**\
+[SELFIES in Wolfram Mathematica](https://resources.wolframcloud.com/PacletRepository/resources/WolframChemistry/Selfies/)  (since Dec 2023)\
 Major contributors of v1.0.n: _[Alston Lo](https://github.com/alstonlo) and [Seyone Chithrananda](https://github.com/seyonechithrananda)_\
 Main developer of v2.0.0: _[Alston Lo](https://github.com/alstonlo)_\
 Chemistry Advisor: [Robert Pollice](https://scholar.google.at/citations?user=JR2N3JIAAAAJ)