Update readme

Editor/EditorThemeSwitcher.cs

@@ -1,6 +1,5 @@
 #if UNITY_EDITOR_OSX
 using UnityEditor;
-using UnityEngine;
 
 namespace NativeColorScheme {
 	public static class EditorThemeSwitcher {

README.md

@@ -1,18 +1,41 @@
 # NativeColorScheme
-System color scheme detection in Unity for macOS and iOS (runtime) and macOS (editor).
+System color scheme detection in Unity for macOS and iOS.
 
 ## Requirements
-Color Scheme requires macOS 11 or later, or iOS 14 or later
+### Runtime
+- macOS 11+
+- iOS 14+
+- tvOS 14+
 
-**Recommended Installation** (Unity Package Manager)
-- "Add package from git URL..."
-- `https://github.com/ryanslikesocool/NativeColorScheme.git`
+---
 
-**Alternate Installation**
-- Get the latest [release](https://github.com/ryanslikesocool/ColorScheme/releases)
-- Open with the desired Unity project
-- Import into the Plugins folder
+### Editor
+- macOS 11+, Unity 2020.3+
+
+## Installation (Unity Package Manager)
+- Select "Add package from git URL..." from the plus menu in the package manager window.
+- Paste the package's git url.
+```
+https://github.com/ryanslikesocool/NativeColorScheme.git
+```
 
 ## Usage
-Get the value from `ColorScheme.ColorSchemeUtil.CurrentColorScheme` from anywhere in your code and use accordingly.\
-Unsupported platforms/OS versions will return `ColorScheme.Unknown`.
+### C#
+```cs
+using NativeColorScheme;
+
+static class Somewhere {
+	static Color GetColorForColorScheme() => ColorSchemeUtil.Current switch {
+		ColorScheme.Light => Color.white,
+		ColorScheme.Dark => Color.black,
+		_ => Color.magenta
+	};
+}
+```
+Unsupported platforms or OS versions will return `null`.
+
+---
+
+### Editor
+Using the Unity editor on macOS, the plugin will automatically detect the system's color scheme and change the editor accordingly.\
+The preference can be set to `System`, `Light`, or `Dark` from the `Window/Color Scheme` menu.