Use SVG for the Travis badge

README.md

diff --git a/README.md b/README.md
index b39fea8..abe2190 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@
 [v0.2.0](https://github.com/mojombo/toml/blob/master/versions/toml-v0.2.0.md)
 
 [![GoDoc](https://godoc.org/github.com/pelletier/go-toml?status.svg)](http://godoc.org/github.com/pelletier/go-toml)
-[![Build Status](https://travis-ci.org/pelletier/go-toml.png?branch=master)](https://travis-ci.org/pelletier/go-toml)
+[![Build Status](https://travis-ci.org/pelletier/go-toml.svg?branch=master)](https://travis-ci.org/pelletier/go-toml)
 
 ## Import