Update README.md (#1072)

Include link to documentation at the very top (it's hard to find!)

README.md

@@ -6,7 +6,8 @@
 ![NPM Version](https://img.shields.io/npm/v/langsmith?logo=npm)
 [![JS Downloads](https://img.shields.io/npm/dm/langsmith)](https://www.npmjs.com/package/langsmith)
 
-This repository contains the Python and Javascript SDK's for interacting with the [LangSmith platform](https://smith.langchain.com/).
+This repository contains the Python and Javascript SDK's for interacting with the [LangSmith platform](https://smith.langchain.com/). Please see [LangSmith Documentation](https://docs.smith.langchain.com/)
+for documentation about using the LangSmith platform and the client SDK.
 
 LangSmith helps your team debug, evaluate, and monitor your language models and intelligent agents. It works
 with any LLM Application, including a native integration with the [LangChain Python](https://github.com/langchain-ai/langchain) and [LangChain JS](https://github.com/langchain-ai/langchainjs) open source libraries.