Update documentation

Documentation/Pageboy 3 Migration Guide.md

@@ -8,12 +8,13 @@ This guide aims to provide an easy transition from existing implementations of P
 
 - iOS 9.0+
 - Xcode 10.0+
-- Swift 4.2+
+- Swift 4.0+
 
 ## What's new
 
 - View Controllers can now be inserted and removed dynamically.
 - Fixed numerous performance and memory issues.
+- Improved Swift 4 & 4.2 compatibility.
 
 ## API Changes
 

README.md

@@ -6,7 +6,7 @@
     <a href="https://travis-ci.org/uias/Pageboy">
         <img src="https://travis-ci.org/uias/Pageboy.svg?branch=master" />
     </a>
-    <img src="https://img.shields.io/badge/Swift-4.2-orange.svg?style=flat" />
+    <img src="https://img.shields.io/badge/Swift-4-orange.svg?style=flat" />
     <a href="https://cocoapods.org/pods/Pageboy">
         <img src="https://img.shields.io/cocoapods/v/Pageboy.svg" alt="CocoaPods" />
     </a>
@@ -31,7 +31,7 @@
 - [x] Support for custom animated page transitions.
 
 ## 📋 Requirements
-Pageboy requires iOS 9 / tvOS 10; and is written in Swift 4.2.
+Pageboy requires iOS 9 / tvOS 10; and Swift 4.
 
 ## 📲 Installation
 ### CocoaPods