Update README.md

Author: Rawblocky

SampleScripts/CatppuccinThemes/README.md

@@ -1,5 +1,15 @@
-## Example use case
 <p align="center">
 	<img src="catppuccinScriptEditorTheme.png"/>
-	Having a custom Roblox Studio Script Editor theme sync depending on your system theme
-</p>
+</p>
+
+## Catppuccin Script Editor theme
+
+1. Install [`Rawblocky/RobloxPlugin-ThemeScriptExecutor`](https://github.com/Rawblocky/RobloxPlugin-ThemeScriptExecutor/tree/main)
+2. Click **Plugins** and find the **ThemeScriptExecutor** toolbar
+3. Click on the button of the theme (**Light** or **Dark**) you want to sync.
+4. Copy the contents of your flavor of choice (**Latte** or **Mocha**) into the script
+5. Restart Studio, and the theme should be set.
+
+## Credits
+
+[`vocksel/rbxtheme`](https://github.com/vocksel/rbxtheme) was used for generating the code for the theme, but, adjustments in the code were made to better match Catppuccin's theme