README.md in versionaire-3.3.1 vs README.md in versionaire-4.0.0

@@ -1,10 +1,10 @@
 # Versionaire
 
 [![Gem Version](https://badge.fury.io/rb/versionaire.svg)](http://badge.fury.io/rb/versionaire)
-[![Code Climate GPA](https://codeclimate.com/github/bkuhlmann/versionaire.svg)](https://codeclimate.com/github/bkuhlmann/versionaire)
-[![Code Climate Coverage](https://codeclimate.com/github/bkuhlmann/versionaire/coverage.svg)](https://codeclimate.com/github/bkuhlmann/versionaire)
+[![Code Climate Maintainability](https://api.codeclimate.com/v1/badges/e61fa9230ecc0bfa6f07/maintainability)](https://codeclimate.com/github/bkuhlmann/versionaire/maintainability)
+[![Code Climate Test Coverage](https://api.codeclimate.com/v1/badges/e61fa9230ecc0bfa6f07/test_coverage)](https://codeclimate.com/github/bkuhlmann/versionaire/test_coverage)
 [![Gemnasium Status](https://gemnasium.com/bkuhlmann/versionaire.svg)](https://gemnasium.com/bkuhlmann/versionaire)
 [![Circle CI Status](https://circleci.com/gh/bkuhlmann/versionaire.svg?style=svg)](https://circleci.com/gh/bkuhlmann/versionaire)
 [![Patreon](https://img.shields.io/badge/patreon-donate-brightgreen.svg)](https://www.patreon.com/bkuhlmann)
 
 Provides immutable, thread-safe, semantic versioning.
@@ -16,11 +16,11 @@
   - [Features](#features)
   - [Screencasts](#screencasts)
   - [Requirements](#requirements)
   - [Setup](#setup)
   - [Usage](#usage)
-  - [Initialization](#initialization)
+    - [Initialization](#initialization)
     - [Equality](#equality)
       - [Value (`#==`)](#value-)
       - [Hash (`#eql?`)](#hash-eql)
       - [Case (`#===`)](#case-)
       - [Identity (`#equal?`)](#identity-equal)
@@ -51,33 +51,24 @@
 
 [![asciicast](https://asciinema.org/a/40455.png)](https://asciinema.org/a/40455)
 
 ## Requirements
 
-0. [Ruby 2.4.x](https://www.ruby-lang.org)
+0. [Ruby 2.5.x](https://www.ruby-lang.org)
 
 ## Setup
 
-For a secure install, type the following (recommended):
+Type the following to install:
 
-    gem cert --add <(curl --location --silent https://www.alchemists.io/gem-public.pem)
-    gem install versionaire --trust-policy MediumSecurity
-
-NOTE: A HighSecurity trust policy would be best but MediumSecurity enables signed gem verification
-while allowing the installation of unsigned dependencies since they are beyond the scope of this
-gem.
-
-For an insecure install, type the following (not recommended):
-
     gem install versionaire
 
 Add the following to your Gemfile:
 
     gem "versionaire"
 
 ## Usage
 
-## Initialization
+### Initialization
 
 A new version can be initialized in a variety of ways:
 
     Versionaire::Version.new                                    # "0.0.0"
     Versionaire::Version.new major: 1                           # "1.0.0"