Merge pull request kodecocodes#788 from mandyreal/swift-4-2-ordered-array

[Swift 4.2]Update Ordered Array

Author: richard-ash

Ordered Array/OrderedArray.playground/Contents.swift

@@ -1,9 +1,6 @@
 //: Playground - noun: a place where people can play
 
-// last checked with Xcode 9.0b4
-#if swift(>=4.0)
-print("Hello, Swift 4!")
-#endif
+
 
 public struct OrderedArray<T: Comparable> {
   fileprivate var array = [T]()