Merge pull request #5 from codebendercc/travis

Updates the coveralls badge

Author: fpapadopou

README.md

@@ -1,5 +1,5 @@
 [![Build Status](https://travis-ci.org/codebendercc/builder.svg?branch=master)](https://travis-ci.org/codebendercc/builder)
-[![Coverage Status](https://coveralls.io/repos/codebendercc/builder/badge.svg)](https://coveralls.io/r/codebendercc/builder)
+[![Coverage Status](https://coveralls.io/repos/codebendercc/builder/badge.svg?branch=master)](https://coveralls.io/r/codebendercc/builder?branch=master)
 
 codebender's builder
 ====================