add Build Status image to readme

diff --git a/README.md b/README.md
index 8285acd..f72337f 100644 (file)
--- a/README.md
+++ b/README.md
@@ -1,5 +1,8 @@
 WP-CLI
 ========
+
+[![Build Status](https://travis-ci.org/wp-cli/wp-cli.png?branch=master)](https://travis-ci.org/wp-cli/wp-cli)
+
 wp-cli is a set of command-line tools for managing WordPress installations.
 
 Where can I get more info?