Updated platform and Swift compatibility badges

Author: rwbutler

README.md

@@ -5,8 +5,8 @@
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
 [![Maintainability](https://api.codeclimate.com/v1/badges/777e0d2788515e5f61a8/maintainability)](https://codeclimate.com/github/rwbutler/FeatureFlags/maintainability)
 [![License](https://img.shields.io/cocoapods/l/FeatureFlags.svg?style=flat)](http://cocoapods.org/pods/FeatureFlags)
-[![Platform](https://img.shields.io/cocoapods/p/FeatureFlags.svg?style=flat)](http://cocoapods.org/pods/FeatureFlags)
-[![Swift 5.0](https://img.shields.io/badge/Swift-5.0-orange.svg?style=flat)](https://swift.org/)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Frwbutler%2FFeatureFlags%2Fbadge%3Ftype%3Dplatforms)](https://swiftpackageindex.com/rwbutler/FeatureFlags)
+[![](https://img.shields.io/endpoint?url=https%3A%2F%2Fswiftpackageindex.com%2Fapi%2Fpackages%2Frwbutler%2FFeatureFlags%2Fbadge%3Ftype%3Dswift-versions)](https://swiftpackageindex.com/rwbutler/FeatureFlags)
 [![Reviewed by Hound](https://img.shields.io/badge/Reviewed_by-Hound-8E64B0.svg)](https://houndci.com)
 
 FeatureFlags makes it easy to configure feature flags, A/B and MVT tests via a JSON file which may be bundled with your app or hosted remotely. For remotely-hosted configuration files, you may enable / disable features without another release to the App Store, update the percentages of users in A/B test groups or even roll out a feature previously under A/B test to 100% of your users once you have decided that the feature is ready for prime time.