This is a Heroku buildpack for using jpegoptim version 1.4.4 in your application.
To use this buildpack you'll first need to set it as your custom buildpack:
$ heroku buildpacks:set https://github.com/heroku/heroku-buildpack-multi.git
From here you will need to create a .buildpacks file which contains (in order) the buildpacks you wish to run when you deploy:
$ cat .buildpacks
https://github.com/gaussgroup/heroku-buildpack-jpegoptim
https://github.com/heroku/heroku-buildpack-ruby