Add a google developer library badge

Author: skydoves

README.md

@@ -7,10 +7,10 @@ Supports alpha & brightness slider bar, dialog, and saving & restoring selected
 <br>
 
 <p align="center">
+  <a href="https://devlibrary.withgoogle.com/products/android/repos/skydoves-colorpickerview"><img alt="Google" src="https://skydoves.github.io/badges/google-devlib.svg"/></a><br>
   <a href="https://opensource.org/licenses/Apache-2.0"><img alt="License" src="https://img.shields.io/badge/License-Apache%202.0-blue.svg"/></a>
   <a href="https://android-arsenal.com/api?level=15"><img alt="API" src="https://img.shields.io/badge/API-15%2B-brightgreen.svg?style=flat"/></a>
   <a href="https://github.com/skydoves/ColorPickerView/actions"><img alt="Build Status" src="https://github.com/skydoves/ColorPickerView/workflows/Android%20CI/badge.svg"/></a>
-  <a href="https://www.codacy.com/app/skydoves/ColorPickerView?utm_source=github.com&amp;utm_medium=referral&amp;utm_content=skydoves/ColorPickerView&amp;utm_campaign=Badge_Grade"><img alt="Codacy" src="https://api.codacy.com/project/badge/Grade/e5d06ece54644717845a059f90632660"/></a>
   <a href="https://androidweekly.net/issues/issue-316"><img alt="Android Weekly" src="https://skydoves.github.io/badges/android-weekly.svg"/></a>
   <a href="https://skydoves.github.io/libraries/colorpickerview/javadoc/"><img alt="Javadoc" src="https://skydoves.github.io/badges/javadoc-colorpicker.svg"/></a>
 </p> <br>