Use master branch

README.md

@@ -2,6 +2,6 @@ snaplet-postgresql-simple
 =========================
 
 [![Hackage](https://img.shields.io/hackage/v/snaplet-postgresql-simple.svg)](https://hackage.haskell.org/package/snaplet-postgresql-simple)
-[![Build Status](https://travis-ci.org/mightybyte/snaplet-postgresql-simple.svg)](https://travis-ci.org/mightybyte/snaplet-postgresql-simple)
+[![Build Status](https://travis-ci.org/mightybyte/snaplet-postgresql-simple.svg?branch=master)](https://travis-ci.org/mightybyte/snaplet-postgresql-simple)
 
 Quick and easy postgresql support for snap applications.