Update readme

Author: stevenschobert

README.md

@@ -2,7 +2,6 @@ metalsmith-sass
 ===============
 
 [![Build Status](https://travis-ci.org/stevenschobert/metalsmith-sass.svg?branch=master)](https://travis-ci.org/stevenschobert/metalsmith-sass)
-[![Dependency Status](https://gemnasium.com/stevenschobert/metalsmith-sass.svg)](https://gemnasium.com/stevenschobert/metalsmith-sass)
 
 A Sass plugin for Metalsmith.