Added Swift PM support

Author: ArtSabintsev

Package.swift

@@ -0,0 +1,5 @@
+import PackageDescription
+
+let package = Package(
+  name: "Zephyr"
+)

README.md

@@ -33,6 +33,11 @@ github "ArtSabintsev/Zephyr"
 
 Add `import Zephyr` to any `.Swift` file that references Zephyr via a Carthage installation.
 
+
+### Swift Package Manager
+``` swift
+.Package(url: "https://github.com/ArtSabintsev/Zephyr.git", majorVersion: 1)
+```
 #### Manual
 
 1. [Download Zephyr](http://github.com/ArtSabintsev/Zephyr/archive/master.zip)
@@ -96,7 +101,7 @@ Zephyr.sync()
 
 ### Sample App
 
-Please ignore the Sample App as I did not add any demo code in the Sample App. It's only in this repo to add support for Carthage. 
+Please ignore the Sample App as I did not add any demo code in the Sample App. It's only in this repo to add support for Carthage.
 
 ### Created and maintained by
 [Arthur Ariel Sabintsev](http://www.sabintsev.com/)

Zephyr.podspec

@@ -1,6 +1,6 @@
 Pod::Spec.new do |s|
   s.name         = "Zephyr"
-  s.version      = "1.4.4"
+  s.version      = "1.4.5"
   s.summary      = "Effortlessly synchronize NSUserDefaults over iCloud"
 
   s.description  = <<-DESC