README.md in authtrail-0.4.1 vs README.md in authtrail-0.4.2

@@ -14,21 +14,28 @@
 
 ```ruby
 gem 'authtrail'
 ```
 
-To encrypt email and IP addresses, install [Lockbox](https://github.com/ankane/lockbox) and [Blind Index](https://github.com/ankane/blind_index) and run:
+To encrypt email and IP addresses with Lockbox, install [Lockbox](https://github.com/ankane/lockbox) and [Blind Index](https://github.com/ankane/blind_index) and run:
 
 ```sh
-rails generate authtrail:install --lockbox
+rails generate authtrail:install --encryption=lockbox
 rails db:migrate
 ```
 
+To use Active Record encryption (Rails 7+, experimental, unreleased), run:
+
+```sh
+rails generate authtrail:install --encryption=activerecord
+rails db:migrate
+```
+
 If you prefer not to encrypt data, run:
 
 ```sh
-rails generate authtrail:install
+rails generate authtrail:install --encryption=none
 rails db:migrate
 ```
 
 To enable geocoding, see the [Geocoding section](#geocoding).
 
@@ -180,9 +187,23 @@
   data[:city] = request.headers["<city-header>"]
 end
 ```
 
 Check out [this example](https://github.com/ankane/authtrail/issues/40)
+
+## Data Retention
+
+Delete older data with:
+
+```ruby
+LoginActivity.where("created_at < ?", 2.years.ago).in_batches.delete_all
+```
+
+Delete data for a specific user with:
+
+```ruby
+LoginActivity.where(user_id: 1, user_type: "User").in_batches.delete_all
+```
 
 ## Other Notes
 
 We recommend using this in addition to Devise’s `Lockable` module and [Rack::Attack](https://github.com/kickstarter/rack-attack).