docs: added Code Climate badges (#71)

README.md

@@ -7,6 +7,8 @@
 [![Nuget version](https://img.shields.io/nuget/v/OneBeyond.Studio.Crosscuts?style=plastic)](https://www.nuget.org/packages/OneBeyond.Studio.Crosscuts)
 [![Nuget downloads](https://img.shields.io/nuget/dt/OneBeyond.Studio.Crosscuts?style=plastic)](https://www.nuget.org/packages/OneBeyond.Studio.Crosscuts)
 [![License](https://img.shields.io/github/license/OneBeyond/onebeyond-studio-core?style=plastic)](LICENSE)
+[![Maintainability](https://api.codeclimate.com/v1/badges/c407801c532fe238657a/maintainability)](https://codeclimate.com/github/onebeyond/onebeyond-studio-core/maintainability)
+[![Test Coverage](https://api.codeclimate.com/v1/badges/c407801c532fe238657a/test_coverage)](https://codeclimate.com/github/onebeyond/onebeyond-studio-core/test_coverage)
 
 # Introduction
 One Beyond Studio Core is a set of .NET libraries that can be used by developers as a foundation to create their solutions based on Clean Architecture principles.