update README to reflect that this is a Git repo now :)

README.md

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+BrewBlogger
+===========
+
+This is a conversion of this 
+[BrewBlogger Subversion dump](https://storage.googleapis.com/google-code-archive-source/v2/code.google.com/brewblogger/repo.svndump.gz) 
+obtained from the Google Code archive.  It was imported into a scratch 
+Subversion repo and converted with git-svn according to the directions I
+found in 
+[this LinkedIn article](https://www.linkedin.com/pulse/migrating-from-svn-git-8-steps-preserving-history-giovanni-zito).
+
+[Scott Alfter](mailto:scott@alfter.us)
+22 February 2024

README.txt

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-This is a Subversion repository; use the 'svnadmin' tool to examine
-it.  Do not add, delete, or modify files here unless you know how
-to avoid corrupting the repository.
-
-Visit http://subversion.tigris.org/ for more information.