title: Load local file during heroku rake task
body: <p>I have an import utility I'd like to use for creating records on heroku.</p>
  
  <p>I want to use that to import data from a file on my development machine without having to check the file into the repository. Is there a way to do this with a rake task or the heroku gem?</p>
  
  <p>I could upload the file in a web form which could time out, or I could store the file on S3, but that seems rather excessive.</p>
  
  <p>Any easy way to do this?</p>