docs: update README

Author: AlphaBs

README-4.0.0.md

@@ -11,34 +11,89 @@
 [![Discord](https://img.shields.io/discord/795952027443527690?label=discord\&logo=discord\&style=for-the-badge)](https://discord.gg/cDW2pvwHSc)
 
 CmlLib.Core is a Minecraft launcher library for .NET\
-Supports all versions, Forge, and any custom version
+support all vanilla and mod versions (including Forge, Fabric, etc...)
 
-[한국어 문서](https://alphabs.gitbook.io/cmllib/v/ko/cmllib.core/cmllib.core)
-
-[简体中文 README](https://github.com/AlphaBs/CmlLib.Core/blob/master/docs/README-chs.md)
+[한국어 문서](https://alphabs.gitbook.io/cmllib/v/v4-kr)
 
 ## Features
 
 * Authenticate with Microsoft Xbox account
 * Get vanilla versions and installed versions
 * Install vanilla versions
-* Launch any vanilla version (tested up to 1.20.4)
+* Launch any vanilla version (tested up to 1.21)
 * Launch Forge, Optifine, FabricMC, LiteLoader or any other custom version
 * Install Java runtime
 * Install LiteLoader, FabricMC
 * Launch with options (direct server connecting, screen resolution, JVM arguments)
 * Cross-platform (Windows, Linux, macOS)
 
-[Go to the wiki for all features](https://alphabs.gitbook.io/cmllib/cmllib.core/cmllib.core)
+[Go to the wiki for all features](https://alphabs.gitbook.io/cmllib)
 
 ## Install
 
 Install the [CmlLib.Core Nuget package](https://www.nuget.org/packages/CmlLib.Core)
+
+## QuickStart
+
+### Get All Versions
+
+```csharp
+using CmlLib.Core;
+
+var launcher = new MinecraftLauncher();
+var versions = await launcher.GetAllVersionsAsync();
+foreach (var version in versions)
+{
+    Console.WriteLine($"{version.Type} {version.Name}");
+}
+```
+
+### Launch the Game
+
+```csharp
+using CmlLib.Core;
+using CmlLib.Core.ProcessBuilder;
+
+var launcher = new MinecraftLauncher();
+var process = await launcher.InstallAndBuildProcessAsync("1.21", new MLaunchOption());
+process.Start();
+```
+
+### Launch the Game with Options
+
+```csharp
+using CmlLib.Core;
+using CmlLib.Core.Auth;
+using CmlLib.Core.ProcessBuilder;
+
+var path = new MinecraftPath("./my_game_dir");
+var launcher = new MinecraftLauncher(path);
+launcher.FileProgressChanged += (sender, args) =>
+{
+    Console.WriteLine($"Name: {args.Name}");
+    Console.WriteLine($"Type: {args.EventType}");
+    Console.WriteLine($"Total: {args.TotalTasks}");
+    Console.WriteLine($"Progressed: {args.ProgressedTasks}");
+};
+launcher.ByteProgressChanged += (sender, args) =>
+{
+    Console.WriteLine($"{args.ProgressedBytes} bytes / {args.TotalBytes} bytes");
+};
+
+await launcher.InstallAsync("1.20.4");
+var process = await launcher.BuildProcessAsync("1.20.4", new MLaunchOption
+{
+    Session = MSession.CreateOfflineSession("Gamer123"),
+    MaximumRamMb = 4096
+});
+process.Start();
+```
+
 ## Documentation
 
-**[Official documentation](https://alphabs.gitbook.io/cmllib/cmllib.core/cmllib.core)**
+**[Official documentation](https://alphabs.gitbook.io/cmllib)**
 
-**[한국어 문서](https://alphabs.gitbook.io/cmllib/v/ko/cmllib.core/cmllib.core)**
+**[한국어 문서](https://alphabs.gitbook.io/cmllib/v/v4-kr)**
 
 ## Example
 
@@ -50,4 +105,4 @@ Install the [CmlLib.Core Nuget package](https://www.nuget.org/packages/CmlLib.Co
   <img src="https://contrib.rocks/image?repo=cmllib/cmllib.core" />
 </a>
 
-Made with [contrib.rocks](https://contrib.rocks).
+Made with [contrib.rocks](https://contrib.rocks).