Update README.md

Author: Ampflower

README.md

@@ -5,24 +5,50 @@
 
 A polymer-based server-side sit mod for Fabric & Quilt!
 
-## How to Use?
+## Installation
 
 Requirements:
- - Minecraft 1.18.2
- - [Polymer](https://modrinth.com/mod/polymer)
- - [Polysit](https://github.com/the-glitch-network/polysit/releases)
- - One of either mod loader:
-   - [Quilt](https://quiltmc.org/install) + [QSL](https://modrinth.com/mod/qsl)
-   - [Fabric](https://fabricmc.net/use) + [Fabric API](https://modrinth.com/mod/fabric-api)
 
-Install Minecraft 1.18.2, Polymer, Polysit and your mod loader of choice, then you can right-click/use a slab or stair
-to sit in it. No client mod is required, but you may install to use it in single player or with LAN.
+- Minecraft 1.19.3 through 1.21.4
+- [Polymer]
+- [Polysit]
+- Pick a mod loader:
+    - [Quilt](https://quiltmc.org/install) + [QSL](https://modrinth.com/mod/qsl)
+    - [Fabric](https://fabricmc.net/use) + [Fabric API](https://modrinth.com/mod/fabric-api)
+
+Install Minecraft, [Polymer], [Polysit] and your mod loader of choice.
+You only need to install it on the server, but there's a client-sided enhancement if one prefers.
+
+You also have the option of using it in singleplayer or with friends over LAN.
+
+## Using
+
+You can right-click/use any slab, stair and bed to sit on it.
+
+There's also `/sit`, which allows you to sit practically anywhere, even on cacti... if you're immune to thorns.
+
+For clients with the mod, there's also a keybind named `Sit`, which defaults to `G`.
+It'll similarly let you sit anywhere, if the server is running Polysit.
+
+> [!NOTE]
+> Servers using other mods or plugins that happen to also include `/sit` as a command,
+> or using an older version of Polysit, may not use the same checks or be as seamless as the latest version.
+>
+> If the server does not support or blocks `/sit`, this keybind may be unavailable and cannot be used.
+>
+> Unfortunately, this is unavoidable as the only method Polysit uses on the client is the `/sit` command.
 
 ## Building
 
-1. Make sure you have the JDK. You can get it from [Adoptium](https://adoptium.net) if you don't already have it. Java
-   17 is required.
+1. Make sure you have the JDK.
+   You can get it from [Adoptium](https://adoptium.net) if you don't already have it.
+   Java 17 is required for <=1.20.4.
+   Java 21 is required for >=1.20.5.
 2. Run `gradlew build`
 3. Get the build from `builds/libs`.
 
-</div>
+</div>
+
+[Polymer]: https://modrinth.com/mod/polymer
+
+[Polysit]: https://modrinth.com/mod/polysit