Update README for version 5.0.0

Author: scalessec

README.md

@@ -78,7 +78,7 @@ Setup Instructions
 To integrate Toast-Swift into your Xcode project using CocoaPods, specify it in your `Podfile`:
 
 ```ruby
-pod 'Toast-Swift', '~> 4.0.0'
+pod 'Toast-Swift', '~> 5.0.0'
 ```
 
 and in your code add `import Toast_Swift`.
@@ -89,7 +89,7 @@ and in your code add `import Toast_Swift`.
 To integrate Toast-Swift into your Xcode project using Carthage, specify it in your `Cartfile`:
 
 ```ogdl
-github "scalessec/Toast-Swift" ~> 4.0.0
+github "scalessec/Toast-Swift" ~> 5.0.0
 ```
 
 Run `carthage update` to build the framework and drag the built `ToastSwiftFramework.framework` into your Xcode project.
@@ -104,6 +104,7 @@ Manually
 
 Compatibility
 ------------------
+* Version `5.x.x` requires Swift 5 and Xcode 10.2.
 * Version `4.x.x` requires Swift 4.2 and Xcode 10.
 * Version `3.x.x` requires Swift 4 and Xcode 9.
 * Version `2.x.x` requires Swift 3 and Xcode 8.
@@ -112,7 +113,7 @@ Compatibility
 
 MIT License
 -----------
-    Copyright (c) 2015-2018 Charles Scalesse.
+    Copyright (c) 2015-2019 Charles Scalesse.
 
     Permission is hereby granted, free of charge, to any person obtaining a
     copy of this software and associated documentation files (the