add build badge (#6)

pq · web-flow · commit 4c370c073c9f · 2021-04-27T14:02:43.000-07:00
diff --git a/README.md b/README.md
@@ -1 +1,3 @@
 This repo contains official Dart and Flutter lint rules.
+
+[![Build Status](https://github.com/dart-lang/lints/workflows/validate/badge.svg)](https://github.com/dart-lang/lints/actions)

Original file line number	Diff line number	Diff line change
`@@ -1 +1,3 @@`
`1`	`1`	`This repo contains official Dart and Flutter lint rules.`
	`2`	`+`
	`3`	`+[![Build Status](https://github.com/dart-lang/lints/workflows/validate/badge.svg)](https://github.com/dart-lang/lints/actions)`