Added all the suggestotron things
Changed Gemfile for heroku
Added Gemfile.lock for Heroku.
Added rake tasks to help with deploying to Heroku.

In this repo I've placed suggestotron into a subfolder. This causes
problems when deploying to Heroku because Heroku expects the Rails app
to be in the root of the repo. I've created a souple of rake tasks to
help with the tasks that require additional options when run.