point to langchain implementation

Author: rectalogic

README.md

@@ -1,5 +1,7 @@
 # langchain-mcp
 
+*Note: langchain now has a more official implementation [langchain-mcp-adapters](https://github.com/langchain-ai/langchain-mcp-adapters)*
+
 ![PyPI - Version](https://img.shields.io/pypi/v/langchain-mcp)
 
 [Model Context Protocol](https://modelcontextprotocol.io) tool calling support in LangChain.
@@ -20,4 +22,4 @@ $ uv run tests/demo.py "Read and summarize the file ./LICENSE"
 Secure MCP Filesystem Server running on stdio
 Allowed directories: [ '/users/aw/projects/rectalogic/langchain-mcp' ]
 The file ./LICENSE is a MIT License agreement. It states that the software is provided "as is" without warranty and that the authors and copyright holders are not liable for any claims, damages, or other liability arising from the software or its use.
-```
+```