README.md in strong_migrations-0.7.9 vs README.md in strong_migrations-0.8.0

@@ -13,11 +13,11 @@
 ## Installation
 
 Add this line to your application’s Gemfile:
 
 ```ruby
-gem 'strong_migrations'
+gem "strong_migrations"
 ```
 
 And run:
 
 ```sh
@@ -117,10 +117,11 @@
     end
   end
   ```
 
 4. Deploy and run migration
+5. Remove the line added in step 1
 
 ### Adding a column with a default value
 
 #### Bad
 
@@ -538,51 +539,25 @@
 end
 ```
 
 #### Good
 
-Add the foreign key without validating existing rows, then validate them in a separate migration.
+Add the foreign key without validating existing rows:
 
-For Rails 5.2+, use:
-
 ```ruby
 class AddForeignKeyOnUsers < ActiveRecord::Migration[7.0]
   def change
     add_foreign_key :users, :orders, validate: false
   end
 end
 ```
 
-Then:
+Then validate them in a separate migration.
 
 ```ruby
 class ValidateForeignKeyOnUsers < ActiveRecord::Migration[7.0]
   def change
     validate_foreign_key :users, :orders
-  end
-end
-```
-
-For Rails < 5.2, use:
-
-```ruby
-class AddForeignKeyOnUsers < ActiveRecord::Migration[5.1]
-  def change
-    safety_assured do
-      execute 'ALTER TABLE "users" ADD CONSTRAINT "fk_rails_c1e9b98e31" FOREIGN KEY ("order_id") REFERENCES "orders" ("id") NOT VALID'
-    end
-  end
-end
-```
-
-Then:
-
-```ruby
-class ValidateForeignKeyOnUsers < ActiveRecord::Migration[5.1]
-  def change
-    safety_assured do
-      execute 'ALTER TABLE "users" VALIDATE CONSTRAINT "fk_rails_c1e9b98e31"'
-    end
   end
 end
 ```
 
 ### Adding a json column