Add TravisCI badge in README

README.md

diff --git a/README.md b/README.md
index 8fe555d..432b7e3 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,8 @@
 
 This library supports TOML version [e3656ad493400895f4460f1244a25f8f8e31a32a](https://github.com/mojombo/toml/tree/e3656ad493400895f4460f1244a25f8f8e31a32a)
 
+[![Build Status](https://travis-ci.org/pelletier/go-toml.png?branch=master)](https://travis-ci.org/pelletier/go-toml)
+
 ## Import
 
     import "github.com/pelletier/go-toml"