Add Docker Hub badge

StefanScherer · web-flow · commit 82d4deba6e0d · 2017-04-26T16:54:12.000+02:00
diff --git a/node/README.md b/node/README.md
@@ -1,4 +1,7 @@
-# Node.js in a Windows Docker image
+# Node.js
+[![This image on DockerHub](https://img.shields.io/docker/pulls/stefanscherer/node-windows.svg)](https://hub.docker.com/r/stefanscherer/node-windows/)
+
+Node.js in a Windows Docker image
 
 See also Docker Hub https://hub.docker.com/r/stefanscherer/node-windows/
 
