Update readme

Author: reinink

README.md

@@ -1,17 +1,13 @@
 # prettier-plugin-tailwindcss
 
-A [Prettier](https://prettier.io/) plugin...
+A [Prettier](https://prettier.io/) plugin for Tailwind CSS that automatically sorts classes based on Tailwind's internal class sorting algorithm.
 
 ## Installation
 
 > Note that `prettier-plugin-tailwindcss` is only compatible with Tailwind CSS v3
 
 ```sh
-# Using npm
 npm install --save-dev prettier prettier-plugin-tailwindcss
-
-# Using Yarn
-yarn add --dev prettier prettier-plugin-tailwindcss
 ```
 
 By default the plugin will look for a [Tailwind config file (`tailwind.config.js`)](https://tailwindcss.com/docs/configuration) in the same directory as your Prettier config file. If your Tailwind config file is somewhere else you can specify this using the `tailwindConfig` option (paths are resolved relative to the Prettier config file):