Fill in the readme.

sjrd · sjrd · commit eceb2ac23a3d · 2019-11-18T14:32:03.000+01:00
diff --git a/README.md b/README.md
@@ -1,3 +1,5 @@
 # Testing Scala.js against the nightly builds of Scala
 
-Work-in-progress
+[![Build Status](https://travis-ci.org/scala-js/scala-js-test-scala-nightly.svg?branch=master)](https://travis-ci.org/scala-js/scala-js-test-scala-nightly)
+
+This repository runs nightly tests of Scala.js against the nightly builds of Scala.
