Add dependency status badge

Author: garyb

README.md

@@ -2,6 +2,7 @@
 
 [![Latest release](http://img.shields.io/bower/v/purescript-ace-halogen.svg)](https://github.com/slamdata/purescript-ace-halogen/releases)
 [![Build Status](https://travis-ci.org/slamdata/purescript-ace-halogen.svg?branch=master)](https://travis-ci.org/slamdata/purescript-ace-halogen)
+[![Dependency Status](https://www.versioneye.com/user/projects/563a1eda1d47d4001500088b/badge.svg?style=flat)](https://www.versioneye.com/user/projects/563a1eda1d47d4001500088b)
 
 A [Halogen](https://github.com/slamdata/purescript-halogen) component for the Ace editor.