We've just released version 1.9.1. This is a minor patch that closes these issues.
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Our Heroku guide has been summarily updated to reflect these new changes.
@julian I get an error when I try to install redistogo
heroku addons:add redistogo
the error is something like "No app is specified"
@julian I did that too
@julian @MatthewHawley Not sure if you got this working or not but you need to specify the application you are adding the addon to:
heroku addons:add redistogo:nano -a myapp
You can also login into the heroku control panel, choose the "Resources" section of your app, click the "Get Add-ons" link and add it there. Terminal is much easier though.