Use svg instead of png to get better image quality

PeterDaveHello · PeterDaveHello · commit a4f33a4aeaf6 · 2015-01-07T17:58:03.000+08:00
diff --git a/README.md b/README.md
@@ -4,7 +4,7 @@ NodeGit
 > Node bindings to the [libgit2](http://libgit2.github.com/) project.
 
 [![Build
-Status](https://travis-ci.org/nodegit/nodegit.png)](https://travis-ci.org/nodegit/nodegit)
+Status](https://travis-ci.org/nodegit/nodegit.svg)](https://travis-ci.org/nodegit/nodegit)
 <a href="https://ci.appveyor.com/project/TimBranyen/nodegit"><img src="https://ci.appveyor.com/api/projects/status/e5a5q75l9yfhnfv2/branch/master" alt="Build Status: Windows" height="18" /></a>
 [![Gitter](https://badges.gitter.im/Join Chat.svg)](https://gitter.im/nodegit/nodegit?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 
