Revert "Convert struct to enum"

Christoffer Winterkvist · Christoffer Winterkvist · commit 76bf10b7ab3b · 2016-06-07T14:28:17.000+02:00
This reverts commit cb9b524.
diff --git a/Source/Shared/Extensions/JSON+Cache.swift b/Source/Shared/Extensions/JSON+Cache.swift
@@ -1,7 +1,7 @@
 import Foundation
 
-/// A configuration enum
-public enum CacheJSONOptions {
+/// A configuration struct
+public struct CacheJSONOptions {
   /// Options used when creating Foundation objects from JSON data
   public static var readingOptions: NSJSONReadingOptions = NSJSONReadingOptions()
   /// Options for writing JSON data.
