This is a Heroku buildpack of PhantomJS(http://phantomjs.org).
Example usage:
https://github.com/stomita/heroku-buildpack-phantomjs
$ git push heroku master">
$ heroku create --stack cedar --buildpack https://github.com/stomita/heroku-buildpack-phantomjs.git# or if your app is already created:
$ heroku buildpacks:add https://github.com/stomita/heroku-buildpack-phantomjs$ git push heroku master