Update README.md

README.md

@@ -10,6 +10,9 @@ Right now, you need to install it using developer mode. I plan to put this in th
 3. Click the "Load unpacked" button and then select the folder of the unpacked extension (should be "FediFollow-Chrome-main").
     + If you have a "Load ZIP" option you can also directly load the downloaded zip file
 
+> :warning: If an error is shown after loading, this is due to soon deprecation of manifest v2. The extension will still work as of now. Manifest will be updated soon.
+
+When visiting a user profile on other Mastodon instances, the follow button will now redirect you to your home instance.
 ## Setup
 - Click the extension icon to set your Mastadon instance (like "infosec.exchange").