README.md in approval-0.2.3 vs README.md in approval-0.3.0

- old
+ new

@@ -28,11 +28,11 @@
   ```
 
 4. Add `acts_as_approval_resource` to the models you want use approval flow:
 
   ```ruby
-  class Post < ApplicationRecord
+  class Book < ApplicationRecord
     acts_as_approval_resource
   end
   ```
 
 ## Approval Flow
@@ -42,11 +42,11 @@
 You send request, but resources aren't created/updated/destroied.
 
 #### :pray: Create
 
 ```ruby
-staff   = User.find_or_create_by(email: "staff@example.com")
+staff = User.find_or_create_by(email: "staff@example.com")
 
 record  = Book.new(name: "Ruby Way", price: 2980)
 request = staff.request_for_create(record, reason: "something")
 request.save # Created Approval::Request record.
 
@@ -56,31 +56,31 @@
 ```
 
 #### :pray: Update
 
 ```ruby
-staff   = User.find_or_create_by(email: "staff@example.com")
+staff = User.find_or_create_by(email: "staff@example.com")
 
 record  = Book.find(1).tap {|record| record.name = "new book title" }
 request = staff.request_for_update(record, reason: "something")
 request.save
 
-records = Book.where(id: 1, 2, 3).map {|record| record.price *= 0.5 }
+records = Book.where(id: [1, 2, 3]).each {|record| record.price *= 0.5 }
 request = staff.request_for_update(records, reason: "something")
 request.save!
 ```
 
 #### :pray: Destroy
 
 ```ruby
-staff   = User.find_or_create_by(email: "staff@example.com")
+staff = User.find_or_create_by(email: "staff@example.com")
 
 record  = Book.find(1)
 request = staff.request_for_destroy(record, reason: "something")
 request.save
 
-records = Book.where(id: 1, 2, 3)
+records = Book.where(id: [1, 2, 3])
 request = staff.request_for_destroy(records, reason: "something")
 request.save!
 ```
 
 ### Respond
@@ -88,11 +88,11 @@
 #### :ok_woman: Approve
 
 Then resources are created/updated/destroied, if respond user have approved the request.
 
 ```ruby
-admin   = User.find_or_create_by(email: "admin@example.com")
+admin = User.find_or_create_by(email: "admin@example.com")
 
 request = Approval::Request.first
 respond = admin.approve_request(request, reason: "something")
 respond.save! # Create/Update/Destroy resources
 ```
@@ -100,11 +100,11 @@
 ##### :no_good: Reject
 
 Then resources are not created/updated/destroied, if respond user have rejected the request.
 
 ```ruby
-admin   = User.find_or_create_by(email: "admin@example.com")
+admin = User.find_or_create_by(email: "admin@example.com")
 
 request = Approval::Request.first
 respond = admin.reject_request(request, reason: "something")
 respond.save!
 ```
@@ -117,18 +117,24 @@
 request = Approval::Request.first
 respond = staff.cancel_request(request, reason: "something")
 respond.save!
 ```
 
+### Comment
+
+```ruby
+admin = User.find_or_create_by(email: "admin@example.com")
+
+request = Approval::Request.first
+admin.approval_comments.create(request: request, content: "Hello")
+```
+
 ### Configuration
 
 ```ruby
 # config/initializers/approval.rb
 
 Approval.configure do |config|
-  # Your user model name (e.g. User, AdminUser, Member, default: User)
-  config.user_class_name = "User"
-
   # Maximum characters of comment for reason (default: 2000)
   config.comment_maximum = 2000
 
   # Permit to respond to own request? (default: false)
   config.permit_to_respond_to_own_request = false