[docs] Add iOS badge

Author: nsk90

README.md

@@ -6,7 +6,7 @@
 [![](https://jitpack.io/v/nsk90/kstatemachine.svg)](https://jitpack.io/#nsk90/kstatemachine)
 [![codecov](https://codecov.io/gh/nsk90/kstatemachine/branch/master/graph/badge.svg?token=IR2JR43FOZ)](https://codecov.io/gh/nsk90/kstatemachine)
 [![Android Arsenal]( https://img.shields.io/badge/Android%20Arsenal-KStateMachine-green.svg?style=flat )]( https://android-arsenal.com/details/1/8276 )
-![multiplatform support](https://img.shields.io/badge/multiplatform-jvm-brightgreen)
+![multiplatform support](https://img.shields.io/badge/multiplatform-jvm%20%7C%20ios-brightgreen)
 
 KStateMachine is a Kotlin DSL library for creating [state machines](https://en.wikipedia.org/wiki/Finite-state_machine)
 and hierarchical state machines ([statecharts](https://www.sciencedirect.com/science/article/pii/0167642387900359/pdf)).