Merge pull request #313 from manicmaniac/badge-coverage

Add badge for test coverage

Author: manicmaniac

README.md

@@ -3,6 +3,7 @@ ApolloDeveloperKit
 
 [![Build Status](https://github.com/manicmaniac/ApolloDeveloperKit/workflows/Test/badge.svg)](https://github.com/manicmaniac/ApolloDeveloperKit/actions?query=workflow%3A"Test")
 [![Maintainability](https://api.codeclimate.com/v1/badges/c45fc7657ce194edee35/maintainability)](https://codeclimate.com/github/manicmaniac/ApolloDeveloperKit/maintainability)
+[![Test Coverage](https://api.codeclimate.com/v1/badges/c45fc7657ce194edee35/test_coverage)](https://codeclimate.com/github/manicmaniac/ApolloDeveloperKit/test_coverage)
 [![CocoaPods Compatible](https://img.shields.io/cocoapods/v/ApolloDeveloperKit.svg)](https://cocoapods.org/pods/ApolloDeveloperKit)
 [![Carthage Compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
 [![Platform](https://img.shields.io/cocoapods/p/ApolloDeveloperKit.svg?style=flat)](https://manicmaniac.github.io/ApolloDeveloperKit/)