Add a dummy observer and remove annotations

spec/integration/rails_4.1.1/Gemfile

@@ -46,3 +46,4 @@ group :development do
   end
 end
 
+gem 'rails-observers'

spec/integration/rails_4.1.1/Gemfile.lock

@@ -74,6 +74,8 @@ GEM
       bundler (>= 1.3.0, < 2.0)
       railties (= 4.1.1)
       sprockets-rails (~> 2.0)
+    rails-observers (0.1.2)
+      activemodel (~> 4.0)
     railties (4.1.1)
       actionpack (= 4.1.1)
       activesupport (= 4.1.1)
@@ -125,6 +127,7 @@ DEPENDENCIES
   jbuilder (~> 2.0)
   jquery-rails
   rails (= 4.1.1)
+  rails-observers
   sass-rails (~> 4.0.3)
   sdoc (~> 0.4.0)
   spring

spec/integration/rails_4.1.1/app/models/task.rb

-# == Schema Information
-#
-# Table name: tasks
-#
-#  id         :integer          not null, primary key
-#  content    :string(255)
-#  status     :integer
-#  created_at :datetime
-#  updated_at :datetime
-#
-
-
 class Task < ActiveRecord::Base
 	enum status: %w(normal active completed)
 end

spec/integration/rails_4.1.1/app/models/task_observer.rb

+class TaskObserver < ActiveRecord::Observer
+end
\ No newline at end of file

spec/integration/rails_4.1.1/test/models/task_test.rb

-# == Schema Information
-#
-# Table name: tasks
-#
-#  id         :integer          not null, primary key
-#  content    :string(255)
-#  status     :integer
-#  created_at :datetime
-#  updated_at :datetime
-#
-
 require 'test_helper'
 
 class TaskTest < ActiveSupport::TestCase