Add readme

packages/storage/README.md

@@ -0,0 +1,19 @@
+# WXT Storage
+
+**Using WXT?** Use the `storage` auto-improt or import `storage` manually:
+
+```ts
+import { storage } from 'wxt/storage';
+```
+
+**Not using WXT?** Install the package and import it manually:
+
+```sh
+pnpm i @wxt-dev/storage
+```
+
+```ts
+import { storage } from '@wxt-dev/storage';
+```
+
+For usage docs, [read the docs](https://wxt.dev/guide/extension-apis/storage.html).