Note that Swift 3 is required for Swift code

Author: 1ec5

README.md

@@ -4,7 +4,7 @@
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
 [![CocoaPods](https://img.shields.io/cocoapods/v/OSRMTextInstructions.svg)](http://cocoadocs.org/docsets/OSRMTextInstructions/)
 
-OSRM Text Instructions is a library for iOS, macOS, tvOS, and watchOS applications written in Swift or Objective-C that transforms [OSRM](http://www.project-osrm.org/) route responses into localized text instructions.
+OSRM Text Instructions is a library for iOS, macOS, tvOS, and watchOS applications written in Swift 3 or Objective-C that transforms [OSRM](http://www.project-osrm.org/) route responses into localized text instructions.
 
 You can use OSRM Text Instructions in conjunction with [MapboxDirections.swift](https://github.com/mapbox/MapboxDirections.swift/) and [MapboxNavigation.swift](https://github.com/mapbox/MapboxNavigation.swift/) to generate visual and voice guidance in a turn-by-turn navigation application.