docs: add cite projects

readme.md

@@ -358,6 +358,7 @@ You can replace all storage-related components to your own implementation, `nano
 **`base.BaseGraphStorage` for storing knowledge graph**
 
 - By default we use [`networkx`](https://github.com/networkx/networkx) as the backend.
+- We have a built-in `Neo4jStorage` for graph, check out this [tutorial](./docs/use_neo4j_for_graphrag.md).
 - `GraphRAG(.., graph_storage_cls=YOURS,...)`
 
 You can refer to `nano_graphrag.base` to see detailed interfaces for each components.
@@ -392,6 +393,15 @@ See [ROADMAP.md](./docs/ROADMAP.md)
 
 
 
+## Projects that used `nano-graphrag`
+
+- [Medical Graph RAG](https://github.com/MedicineToken/Medical-Graph-RAG): Graph RAG for the Medical Data
+- [LightRAG](https://github.com/HKUDS/LightRAG): Simple and Fast Retrieval-Augmented Generation
+
+> Welcome to pull requests if your project uses `nano-graphrag`, it will help others to trust this repo❤️
+
+
+
 ## Issues
 
 - `nano-graphrag` didn't implement the `covariates` feature of `GraphRAG`