move examples to the top-level directory

examples/javascript/sync-node/README.md

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+# sync-node
+
+This is a minimal example showing how to use [`@tursodatabase/sync`](https://www.npmjs.com/package/@tursodatabase/database) in the node.js
+
+
+The `@tursodatabase/sync` package extends a regular database with **bidirectional synchronization** between a local file and a remote [Turso Cloud](https://turso.tech/) database.
+
+It allows you to:
+
+* **`pull()`**: fetch and apply remote changes into your local database.
+  This ensures your local state reflects the latest server-side updates.
+
+* **`push()`**: upload local changes back to the remote database.
+  This is useful when you’ve made inserts/updates locally and want to replicate them to the cloud.
+
+Together, these methods make it possible to work **offline-first** (mutating the local database) and later sync your changes to Turso Cloud, while also bringing in any updates from other clients.
+
+---
+
+## Usage
+
+```bash
+npm install
+
+TURSO_AUTH_TOKEN=$(turso db tokens create <db-name>) # create auth token for the database in the Turso Cloud
+TURSO_DATABASE_URL=$(turso db show <db-name> --url) # fetch URL for the database in the Turso Cloud
+node index.mjs
+```
+
+Here’s a version of your README with a short high-level explanation of what the **sync package** does, and what `pull`/`push` mean in practice: