how to configure Mongoid for Heroku with the MongoHQ addon?

How do I configure Mongoid for deploying to Heroku with the MongoHQ addon? What goes in the config/mongoid.yml file? Does anything more need to be done? (In earlier releases, changes were required for the config/application.rb file.) Heroku has instructions for MongoMapper but not Mongoid at

can't deploy Rails 3 release candidate apps

Heroku, please update Bundler to 1.0.0.rc.1 so we can use our Rails 3 apps. The Rails 3 release candidate is out and now we can't deploy Rails 3 apps to Heroku. I get - Gemfile detected, running Bundler Unresolved dependencies detected; Installing... Fetching source index from

failure to configure wildcard DNS

Have I missed a step with wildcard DNS? I have heroku info --app yax === yax Web URL:http://yax.heroku.com/ Domain name:http://yax.com/ Addons: Custom Domains, Custom Domains + Wildcard, Zerigo DNS But when I try: heroku domains:add *.yax.com I get an error: can't have