README.md in mainstreet-0.3.0 vs README.md in mainstreet-0.4.0

@@ -2,11 +2,11 @@
 
 Address verification for Ruby and Rails
 
 :earth_americas: Supports international addresses
 
-[![Build Status](https://github.com/ankane/mainstreet/workflows/build/badge.svg?branch=master)](https://github.com/ankane/mainstreet/actions)
+[![Build Status](https://github.com/ankane/mainstreet/actions/workflows/build.yml/badge.svg)](https://github.com/ankane/mainstreet/actions)
 
 ## Installation
 
 Add this line to your application’s Gemfile:
 
@@ -145,15 +145,9 @@
 ```ruby
 class User < ApplicationRecord
   has_encrypted :street, :postal_code
 end
 ```
-
-## Upgrading
-
-### 0.2.0
-
-See the [upgrade guide](docs/0-2-Upgrade.md)
 
 ## History
 
 View the [changelog](https://github.com/ankane/mainstreet/blob/master/CHANGELOG.md)