update readme

Author: marcorieser

README.md

@@ -1,23 +1,51 @@
 # Tailwind Merge Statamic
 
-> Tailwind Merge Statamic is a Statamic addon that does something pretty neat.
+This addon allows you to merge multiple [Tailwind CSS](https://tailwindcss.com/) classes and automatically resolves conflicts between them.
+
+![](https://raw.githubusercontent.com/marcorieser/tailwind-merge-statamic/main/art/example.png)
 
 ## Features
 
-This addon does:
+This addon provides:
 
-- This
-- And this
-- And even this
+- An Antlers modifier for merging the Tailwind CSS classes
+- Installs [`tailwind-merge-laravel`](https://github.com/gehrisandro/tailwind-merge-laravel) for making usage of the features outside of Antlers
 
-## How to Install
+## Installation
 
-You can search for this addon in the `Tools > Addons` section of the Statamic control panel and click **install**, or run the following command from your project root:
+Run the following command from your project root:
 
 ``` bash
 composer require marcorieser/tailwind-merge-statamic
 ```
 
 ## How to Use
 
-Here's where you can explain how to use this wonderful addon.
+Just apply the modifier to your existing classes. <br>
+By default, the modifier uses the value of `class` in the current level of the cascade for merging.
+```antlers
+<div class="{{ 'w-10 h-10 rounded-full bg-red-500' | tw_merge }}"></div>
+```
+
+ However, you can use a different variable by passing its name as parameter to the modifier.
+```antlers
+<div class="{{ 'w-10 h-10 rounded-full bg-red-500' | tw_merge('my_variable_name') }}"></div>
+```
+
+Additionally, you can disable the usage of a variable in the cascade completely by passing `false` as parameter. <br>
+This allows you to pass the variable directly in the classes string:
+```antlers
+<div class="{{ 'w-10 h-10 rounded-full bg-red-500 {class}' | tw_merge(false) }}"></div>
+```
+
+Or merging arrays of classes:
+```antlers
+<div class="{{ [ 'w-10', 'h-10', 'rounded-full', 'bg-red-500', class, some_other_variable ] | tw_merge(false) }}"></div>
+```
+
+
+## Documentation
+There is currently not more to that addon as written above but the underlying Laravel package is capable of so much more. <br> Please have a look at its [GitHub Repo](https://github.com/gehrisandro/tailwind-merge-laravel).
+
+## Credits
+Huge thanks to [Sandro Gehri](https://github.com/gehrisandro) for providing all of these features.