Fix CI badge and add GIF demo to README

README.md

@@ -1,10 +1,12 @@
 # bore
 
-[![Build status](https://github.com/ekzhang/bore/workflows/ci/badge.svg)](https://github.com/ekzhang/bore/actions)
+[![Build status](https://img.shields.io/github/workflow/status/ekzhang/bore/CI)](https://github.com/ekzhang/bore/actions)
 [![Crates.io](https://img.shields.io/crates/v/bore-cli.svg)](https://crates.io/crates/bore-cli)
 
 A modern, simple TCP tunnel in Rust that exposes local ports to a remote server, bypassing standard NAT connection firewalls. **That's all it does: no more, and no less.**
 
+![Video demo](https://i.imgur.com/vDeGsmx.gif)
+
 ```shell
 # Installation (requires Rust)
 cargo install bore-cli