Update version badge

Resolves #146

Author: garyb

README.md

@@ -1,6 +1,6 @@
 # purescript-prelude
 
-[![Latest release](http://img.shields.io/bower/v/purescript-prelude.svg)](https://github.com/purescript/purescript-prelude/releases)
+[![Latest release](http://img.shields.io/github/release/purescript/purescript-prelude.svg)](https://github.com/purescript/purescript-prelude/releases)
 [![Build Status](https://travis-ci.org/purescript/purescript-prelude.svg?branch=master)](https://travis-ci.org/purescript/purescript-prelude)
 
 The PureScript prelude.