Merge pull request #56 from mirego/fix_missing_import

Fix missing UIKit import

Author: Luc Dion

README.md

@@ -80,7 +80,7 @@ A view can be layouted using PinLayout and later with another method/framework.
 
 * Minimize as much as possible calculations and constants when layouting views. But it is always possible to add advanced computation if required.
 
-* Methods match as much as possible other layouting systems, including CSS, flexbox, reactive Flexbox, …
+* Method's name match as much as possible other layouting systems, including CSS, flexbox, reactive Flexbox, …
 	* margin, marginHorizontal, marginVertical, marginTop, marginLeft, marginBottom, marginRight
 	* top, left, bottom, right, width, height  
 	* As in CSS and flexbox, right and bottom coordinates are offset from container view's right and bottom edges.

Sources/PinLayoutImpl.swift

@@ -28,6 +28,7 @@
 import Foundation
 
 #if os(iOS) || os(tvOS)
+import UIKit
 
 public var unitTestLastWarning: String?