Merge pull request #1 from dart-lang/devoncarew_scan_cache

Devoncarew scan cache
diff --git a/README.md b/README.md
index 2ef89f5..d30f622 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,8 @@
 
 A library to reflect on the local pub cache.
 
+[![Build Status](https://travis-ci.org/dart-lang/pubcache.svg)](https://travis-ci.org/dart-lang/pubcache)
+
 ## Features and bugs
 
 Please file feature requests and bugs at the [issue tracker][tracker].