Merge pull request #314 from borisbu/link-to-v4

Readme: direct link to v4 release

README.md

@@ -26,10 +26,13 @@ The plugin allows you to set your own icons and flexibly customize the way the r
 
 ## Requirements
 
-- Python: at least `3.9`:
-  - Earlier versions of Python are supported by the plugin version `4.x` (however it does not support Raspberry Pi 5);
-- OctoPrint: at least `1.5.3`:
-  - For [AutoConnect feature](https://github.com/borisbu/OctoRelay/blob/master/CHANGELOG.md#330): at least `1.9.0`.
+- Python — at least `3.9` ⚠️
+  - Earlier versions of Python are supported by the plugin version `4.x`;
+  - That version however does not support Raspberry Pi 5;
+  - You can install that version of the plugin manually using this URL in OctoPrint Plugin Manager:
+    `https://github.com/borisbu/OctoRelay/releases/download/4.2.1/release.zip`.
+- OctoPrint — at least `1.5.3`:
+  - For [AutoConnect feature](https://github.com/borisbu/OctoRelay/blob/master/CHANGELOG.md#330) — at least `1.9.0`.
 
 ## Setup