Updates framework

Author: s4cha

.swift-version

@@ -1 +1 @@
-3.0
+4.0

Arrow.framework.zip

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name             = 'Arrow'
-  s.version          = "3.0.5"
+  s.version          = "4.0.0"
   s.summary          = "Elegant JSON Parsing in Swift"
   s.homepage         = "https://github.com/freshOS/Arrow"
   s.license          = { :type => "MIT", :file => "LICENSE" }

Arrow.podspec

@@ -2,7 +2,7 @@
 
 # Arrow
 
-[![Language: Swift 2 and 3](https://img.shields.io/badge/language-swift2|swift3-f48041.svg?style=flat)](https://developer.apple.com/swift)
+[![Language: Swift 2, 3 and 4 3](https://img.shields.io/badge/language-swift2|swift3|swift4-f48041.svg?style=flat)](https://developer.apple.com/swift)
 ![Platform: iOS 8+](https://img.shields.io/badge/platform-iOS%208%2B-blue.svg?style=flat)
 [![Carthage compatible](https://img.shields.io/badge/Carthage-compatible-4BC51D.svg?style=flat)](https://github.com/Carthage/Carthage)
 [![Cocoapods compatible](https://img.shields.io/badge/Cocoapods-compatible-4BC51D.svg?style=flat)](https://cocoapods.org)
@@ -237,6 +237,7 @@ if let collection = json.collection {
 ## Swift Version
 Swift 2 -> version **2.0.3**  
 Swift 3 -> version **3.0.5**
+Swift 4 -> version **4.0.0**
 
 ## Acknoledgments
 This wouldn't exist without [YannickDot](https://github.com/YannickDot), [Damien-nd](https://github.com/damien-nd) and [maxkonovalov](https://github.com/maxkonovalov)