. d Add YouTube badge

Author: jonreid

README.md

@@ -3,6 +3,7 @@
 [![Sample app](https://github.com/jonreid/TestableView/actions/workflows/sampleApp.yml/badge.svg)](https://github.com/jonreid/TestableView/actions/workflows/sampleApp.yml)
 [![Mastodon Follow](https://img.shields.io/mastodon/follow/109765011064804734?domain=https%3A%2F%2Fiosdev.space
 )](https://iosdev.space/@qcoding)
+[![YouTube Subscribers](https://img.shields.io/youtube/channel/subscribers/UC69XtVGLRydpG7o1nkdQs8Q)](https://www.youtube.com/@QualityCoding)
 
 TestableView improves SwiftUI unit testing by cutting through the clutter of boilerplate code, letting you zero in on what matters: your test's intent.