Add gem dependency status badge to README

README.md

@@ -3,6 +3,7 @@
 [![Build Status][badge-travis]][travis]
 [![Coverage Status][badge-coveralls]][coveralls]
 [![Gem Version][badge-gem]][rubygems]
+[![Dependency Status][badge-deps]][gemnasium]
 
 Provides a [Liquid][liquid] tag for embedding asciicasts recorded with
 [asciinema][asciinema] for use in [Jekyll][jekyll] sites.
@@ -59,9 +60,11 @@ file to [rubygems.org](https://rubygems.org).
 [badge-travis]: https://travis-ci.org/mnuessler/jekyll-asciinema.svg?branch=master
 [badge-coveralls]: https://coveralls.io/repos/mnuessler/jekyll-asciinema/badge.svg
 [badge-gem]: https://badge.fury.io/rb/jekyll-asciinema.svg
+[badge-deps]: https://gemnasium.com/mnuessler/jekyll-asciinema.svg
 [travis]: https://travis-ci.org/mnuessler/jekyll-asciinema
 [coveralls]: https://coveralls.io/r/mnuessler/jekyll-asciinema
 [rubygems]: https://rubygems.org/gems/jekyll-asciinema
+[gemnasium]: https://gemnasium.com/mnuessler/jekyll-asciinema
 [liquid]: http://liquidmarkup.org "Liquid templating language"
 [asciinema]: https://asciinema.org "Asciinema"
 [jekyll]: http://jekyllrb.com "Jekyll"