frontpage README.md: added note on Andrey Egorov DM extensions

README.md

@@ -29,11 +29,17 @@ Current version (r2766) includes
  
 Full details can be found in the Explanatory Supplement (included in the package) and details of installation and the change log are in the package README.
 
-This development of GALPROP v54 has been downloaded almost 900 times since the start in 2015.
+This development of GALPROP v54 had been downloaded almost 900 times since the start in 2015 up to change to git repository.
 
 Please inform me (aws@mpe.mpg.de or post a message on the blog) if you download from gitlab since it does not record download statistics yet.
 
 
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+Note added 3 Nov 2020: DM extensions to v54 from Andrey Egorov are at
+https://github.com/a-e-egorov/GALPROP_DM
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 Older versions, datasets etc: http://galprop.stanford.edu .