Improve README

README.md

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 [![Discord](https://img.shields.io/static/v1?style=popout&label=chat&message=discord&color=7289DA)](https://discord.gg/YtnXecuAwF)
 
 Allows players to open the gamemode switcher and toggle their gamemode even if they do not have the required permission level.
+
+Gamemode Unrestrictor requires the [Fabric modloader](https://fabricmc.net/use/).
+
+## Installation
+
+1. Download Gamemode Unrestrictor from [CurseForge](https://www.curseforge.com/minecraft/mc-mods/gamemode-unrestrictor/files) or [GitHub](https://github.com/haykam821/Gamemode-Unrestrictor/releases).
+2. Place the downloaded file in your `mods` folder.
+
+## Usage
+
+When this mod is installed, the gamemode switcher and quick toggle will be available even if the player does not appear to have permission to use the `/gamemode` command. This is useful for scenarios where the player has access to the `/gamemode` command but not the permission level required for it, such as due to a [player role](https://github.com/Gegy/player-roles).