Added README

Author: Srushtika

README.md

@@ -2,9 +2,9 @@
 
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-# Tutorials repository
+# JWT auth tutorial
 
-This repository contains the working code for many of the [Ably tutorials](https://www.ably.io/tutorials).
+This repository contains the working code for [Ably JWT auth tutorial](https://www.ably.io/tutorials/jwt-authentication). See [JWT documentation](https://www.ably.io/documentation/general/authentication#token-authentication) to understand more about it.
 
 See [https://www.ably.io/tutorials](https://www.ably.io/tutorials) for a complete list of Ably tutorials. The source code for each tutorial exists as a branch in this repo, see [the complete list of tutorial branches in this repository](https://github.com/ably/tutorials/branches/all).