Add codeclimate badges (#6)

Author: mhdcodes

CODE_OF_CONDUCT.md

@@ -116,13 +116,13 @@ the community.
 
 This Code of Conduct is adapted from the [Contributor Covenant][homepage],
 version 2.0, available at
-https://www.contributor-covenant.org/version/2/0/code_of_conduct.html.
+<https://www.contributor-covenant.org/version/2/0/code_of_conduct.html>.
 
 Community Impact Guidelines were inspired by [Mozilla's code of conduct
 enforcement ladder](https://github.com/mozilla/diversity).
 
 [homepage]: https://www.contributor-covenant.org
 
 For answers to common questions about this code of conduct, see the FAQ at
-https://www.contributor-covenant.org/faq. Translations are available at
-https://www.contributor-covenant.org/translations.
+<https://www.contributor-covenant.org/faq>. Translations are available at
+<https://www.contributor-covenant.org/translations>.

README.md

@@ -1,6 +1,7 @@
 # Slopeone
 
 ![Tests](https://github.com/phpjuice/slopeone/workflows/Tests/badge.svg?branch=main)
+[![Maintainability](https://api.codeclimate.com/v1/badges/4b362481ae8a8cf39936/maintainability)](https://codeclimate.com/github/phpjuice/slopeone/maintainability)
 [![Latest Stable Version](http://poser.pugx.org/phpjuice/slopeone/v)](https://packagist.org/packages/phpjuice/slopeone)
 [![Total Downloads](http://poser.pugx.org/phpjuice/slopeone/downloads)](https://packagist.org/packages/phpjuice/slopeone)
 [![License](http://poser.pugx.org/phpjuice/slopeone/license)](https://packagist.org/packages/phpjuice/slopeone)
@@ -93,7 +94,7 @@ this should produce the following results
 you can easily run tests using composer
 
 ```bash
-$ composer test
+composer test
 ```
 
 ## Built With
@@ -129,6 +130,7 @@ the [tags on this repository](https://github.com/PHPJuice/slopeone/tags).
 license. Please see the [Licence](https://github.com/phpjuice/slopeone/blob/main/LICENSE) for more information.
 
 ![Tests](https://github.com/phpjuice/slopeone/workflows/Tests/badge.svg?branch=main)
+[![Maintainability](https://api.codeclimate.com/v1/badges/4b362481ae8a8cf39936/maintainability)](https://codeclimate.com/github/phpjuice/slopeone/maintainability)
 [![Latest Stable Version](http://poser.pugx.org/phpjuice/slopeone/v)](https://packagist.org/packages/phpjuice/slopeone)
 [![Total Downloads](http://poser.pugx.org/phpjuice/slopeone/downloads)](https://packagist.org/packages/phpjuice/slopeone)
 [![License](http://poser.pugx.org/phpjuice/slopeone/license)](https://packagist.org/packages/phpjuice/slopeone)