docs: use new nuxi module add command in installation (#829)

* docs: use new `nuxi module add` command in installation

* chore: fix up wording

---------

Co-authored-by: Inesh Bose <dev@inesh.xyz>

README.md

@@ -28,7 +28,13 @@
 
 ## Quick Setup
 
-1. Add `@nuxtjs/tailwindcss` dependency to your project
+Add `@nuxtjs/tailwindcss` using the [Nuxt CLI](https://github.com/nuxt/cli) to your project
+
+```bash
+npx nuxi@latest module add tailwindcss
+```
+
+or add `@nuxtjs/tailwindcss` using your dependency manager
 
 ```bash
 # Using pnpm
@@ -41,9 +47,7 @@ yarn add --dev @nuxtjs/tailwindcss
 npm install --save-dev @nuxtjs/tailwindcss
 ```
 
-*You can test latest additions on [Nightly Releases](https://tailwindcss.nuxtjs.org/getting-started/installation#nightly-releases)!*
-
-2. Add `@nuxtjs/tailwindcss` to the `modules` section of `nuxt.config.{ts,js}`
+and then to the `modules` section of `nuxt.config.{ts,js}`
 
 ```ts
 export default defineNuxtConfig({
@@ -55,6 +59,8 @@ export default defineNuxtConfig({
 
 That's it! You can now use Tailwind classes in your Nuxt app ✨
 
+*You can test latest additions on [Nightly Releases](https://tailwindcss.nuxtjs.org/getting-started/installation#nightly-releases)!*
+
 [📖  Read more](https://tailwindcss.nuxtjs.org/getting-started/)
 
 ## Contributing

docs/content/1.getting-started/1.installation.md

@@ -9,6 +9,10 @@ description: Using Tailwind CSS in your Nuxt project is only one command away.
 
 ::code-group
 
+```bash [nuxi]
+npx nuxi@latest module add tailwindcss
+```
+
 ```bash [yarn]
 yarn add -D @nuxtjs/tailwindcss
 ```
@@ -23,7 +27,7 @@ pnpm i -D @nuxtjs/tailwindcss
 
 ::
 
-2. Add it to your `modules` section in your `nuxt.config`:
+2. If not already done, add it to your `modules` section in your `nuxt.config`:
 
 ::code-group
 ```ts [Nuxt 3]