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