docs: 📝 add instructions to the README

README.md

@@ -1,2 +1,47 @@
 # vite-plugin-add-scripts
 A Vite plugin to add custom scripts to the index.html file
+
+## Installation
+```
+npm install vite-plugin-add-scripts
+```
+
+## Usage
+Add your plugin to the `plugins` array. You can also specify when the plugin
+should be used with the `apply` option.
+
+```js
+// vite.config.js
+import ViteAddScripts from 'vite-plugin-add-scripts'
+
+export default {
+  plugins: [
+    {
+      ...ViteAddScripts([
+        {
+          position: 'head',
+          content: '<script>window.foo = {}</script>'
+        }
+      ]),
+      apply: 'build',
+    }
+  ]
+}
+```
+
+## Options
+You can use the `position` option to add the script to either the head or the
+body section of the index.html file
+
+The `content` option is the actual content that gets written to the file.
+Normally it would be a stringified version of the script tags and their
+contents.
+
+```js
+...ViteAddScripts([
+  {
+    position: 'body', // or 'head'
+    content: '<sciprt>window.foo = {}</script>'
+  }
+]),
+```