link to uploaded report in new conformance section in readme

Author: the-mikedavis

README.md

@@ -5,11 +5,22 @@ WebSocket support for Mint 🌱
 > This repo is not complete: it only tests WebSockets over HTTP/1.
 > Issues and PRs are welcome :slightly_smiling_face:
 
+## Spec conformance
+
+This library aims to follow [RFC6455](https://tools.ietf.org/html/rfc6455)
+as closely as possible and uses
+[Autobahn|Testsuite](https://github.com/crossbario/autobahn-testsuite)
+to check conformance with every run of tests/CI. The auto-generated report
+produced by the Autobahn|Testsuite is uploaded on each push to main.
+
+See the report here:
+https://mint-websocket.nyc3.digitaloceanspaces.com/autobahn/index.html
+
 ## Usage
 
 `Mint.WebSocket` piggybacks much of the existing `Mint.HTTP` API. For example,
-here's sending and receiving a text frame of "hello world" to a WebSocket
-server which echos our frames:
+this snippet shows sending and receiving a text frame of "hello world" to a
+WebSocket server which echos our frames:
 
 ```elixir
 # bootstrap