add AppVeyor build status badge (#8341)
diff --git a/README.md b/README.md
index 00008d8..b98b5ec 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,8 @@
=======
[](https://gitter.im/flutter/flutter?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-[](https://travis-ci.org/flutter/flutter)
+[](https://travis-ci.org/flutter/flutter)
+[](https://ci.appveyor.com/project/flutter/flutter/branch/master)
[](https://coveralls.io/github/flutter/flutter?branch=master)
Flutter is a new way to build high-performance, cross-platform mobile apps.