Update README badges

Author: pkuczynski

README.md

@@ -1,9 +1,9 @@
 # Config
 
-[![Gem Version](https://badge.fury.io/rb/config.svg)](http://badge.fury.io/rb/config)
+[![Version](https://img.shields.io/gem/v/config)](https://rubygems.org/gems/config)
+[![Downloads Total](https://img.shields.io/gem/dt/config)](https://rubygems.org/gems/config)
+[![Build](https://img.shields.io/github/workflow/status/rubyconfig/config/tests)](https://rubygems.org/gems/config)
 [![Tests](https://github.com/rubyconfig/config/workflows/tests/badge.svg)](https://github.com/rubyconfig/config/actions?query=branch%3Amaster)
-[![Maintainability](https://api.codeclimate.com/v1/badges/85c206c13dce7de090af/maintainability)](https://codeclimate.com/github/rubyconfig/config/maintainability)
-[![Test Coverage](https://api.codeclimate.com/v1/badges/85c206c13dce7de090af/test_coverage)](https://codeclimate.com/github/rubyconfig/config/test_coverage)
 [![Financial Contributors on Open Collective](https://opencollective.com/rubyconfig/all/badge.svg?label=backers)](https://opencollective.com/rubyconfig)
 
 ## Summary