Upgrade to Rails 4.1.1
rake rails:update
Rename Subscription.public to Subscription.open

You tried to define a scope named "public" on the model "Subscription",
but Active Record already defined a class method with the same name.
Fix deprecated finder methods
Don't use return in block

LocalJumpError: unexpected return
s/before_filter/before_action/
We should use :hybrid cookies serializer for migration

http://guides.rubyonrails.org/upgrading_ruby_on_rails.html#cookies-serializer
{update,delete}_all no longer takes conditions
Merge pull request #172 from eagletmt/rails-4-1

Upgrade to Rails 4.1