Update README.md

2020-12-09 09:30:14 +01:00 · 2020-12-09 09:30:14 +01:00 · 0976164cb8
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 ## Notice

-This project is in maintenance mode. No active development anymore.
+This project is  read-only and [archive](https://docs.github.com/en/free-pro-team@latest/github/creating-cloning-and-archiving-repositories/archiving-repositories) mode. No active development anymore.

 ## Versions