Add a state_machine patch for rails 4.1.
user
```ruby
# This is a patch to address the issue in https://github.com/pluginaweek/state_machine/issues/251
# where gem 'state_machine' was not working for Rails 4.1
module StateMachine
  module Integrations
     module ActiveModel
        public :around_validation
     end
  end
end
```
assistant