README.md in gindex-0.1.2 vs README.md in gindex-0.2.0

@@ -1,15 +1,27 @@
 # g index
 
 :speedboat: Instant **concurrent** index migrations for Rails
 
-```ruby
+```sh
 rails g index users email
 ```
 
-Also works with multi-column indexes
+generates:
 
 ```ruby
+class AddIndexOnEmailToUsers < ActiveRecord::Migration[6.0]
+  disable_ddl_transaction!
+
+  def change
+    add_index :users, [:email], algorithm: :concurrently
+  end
+end
+```
+
+Also works with multi-column indexes
+
+```sh
 rails g index deliveries store_id delivered_at
 ```
 
 ## Installation