readme: add notes for the linux app

Author: guihkx

README.md

@@ -37,6 +37,14 @@ Every ~60 seconds, the application sends a "minute watched" event to the channel
 - Successfully logging into your Twitch account in the application, may cause Twitch to send you a "New Login" notification email. This is normal - you can verify that it comes from your own IP address. The application uses the Twitch's SmartTV account linking process, so the detected browser during the login should signify that as well.
 - The time remaining timer always countdowns a single minute and then stops - it is then restarted only after the application redetermines the remaining time. This "redetermination" can happen as early as at 10 seconds in a minute remaining, and as late as 20 seconds after the timer reaches zero (especially when finishing mining a drop), but is generally only an approximation and does not represent nor affect actual mining speed. The time variations are due to Twitch sometimes not reporting drop progress at all, or reporting progress for the wrong drop - these cases have all been accounted for in the application though.
 
+### Notes about Linux:
+
+- Like the Windows app, the Linux app is built and distributed here in a portable-executable format (think [AppImages](https://appimage.org/)).
+- The Linux app should work out of the box on any modern distribution (as long as it has `glibc` >= 2.31 and a working display server). If the app doesn't even open for you, please [open an issue](https://github.com/DevilXD/TwitchDropsMiner/issues/new).
+- Like on Windows, every feature of the app is expected to work correctly on Linux as well. If you find something that's broken, please open a new issue.
+- The size of the Linux app is significantly larger than the Windows app due to the inclusion of the gtk3 library (and its dependencies), which is required for proper system tray/notifications support.
+- As an alternative to the native Linux app, you can run the Windows app via [Wine](https://www.winehq.org/) instead. It works really well!
+
 ### Support
 
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