Update README.md

Author: ihnorton

README.md

@@ -11,6 +11,9 @@ Please see the following blog posts for background:
 * [Why TileDB as a Vector Database](https://tiledb.com/blog/why-tiledb-as-a-vector-database)
 * [TileDB Vector Search 101](https://tiledb.com/blog/tiledb-101-vector-search/)
 
+We are actively working on LangChain integration, with others to come soon:
+* https://github.com/TileDB-Inc/langchain/pull/1 (WIP)
+
 # Quick Links
 
 * [Build Instructions](https://tiledb-inc.github.io/TileDB-Vector-Search/documentation/Building.html)