Update README.md

README.md

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 SyncTrayzor [![Build status](https://ci.appveyor.com/api/projects/status/pwa4mpy4066okxyu?svg=true)](https://ci.appveyor.com/project/canton7/synctrayzor)
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+⚠️ SyncTrayzor is unmaintained ⚠️
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+
+I stopped using Syncthing some years ago, and I'm afraid I don't have the time to maintain it. Sorry.
+
+If you feel like forking it, please do. Otherwise, I can recommend [Syncthing Tray](https://github.com/Martchus/syncthingtray).
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+
 Quick Links
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