Added reloading of memory cache when reentering the application

SKCache.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'SKCache'
-  s.version          = '1.3.0'
+  s.version          = '1.4.1'
   s.summary          = 'A caching libary to allow storing each possible type in Swift'
 
 # This description is used to generate tags and improve search results.

SKCache/Classes/SKCache.swift

@@ -194,8 +194,8 @@ public class SKCache: NSCache<AnyObject, AnyObject> {
   override init() {
     super.init()
 
-    set(object: [SKObject]() as AnyObject)
-    try? load()
+    loadCache()
+    NotificationCenter.default.addObserver(self, selector: #selector(applicationIsActivating(notification:)), name: .UIApplicationWillEnterForeground, object: nil)
   }
 
   // MARK: - Override methods
@@ -297,5 +297,18 @@ public class SKCache: NSCache<AnyObject, AnyObject> {
       throw Operations.saveFail
     }
   }
+
+  /// Private method to load the cache
+  private func loadCache() {
+    set(object: [SKObject]() as AnyObject)
+    try? load()
+  }
+
+  /// Private method to handle notifications for active application state
+  ///
+  /// - Parameter notification: A notification send by the OS
+  @objc private func applicationIsActivating(notification: Notification) {
+    loadCache()
+  }
 }