Option to turn off background caching

Author: Marcus S. Zarra

ZSAssetManager.m

@@ -72,7 +72,7 @@ - (NSOperationQueue*)assetQueue;
 
 @implementation ZSAssetManager
 
-@synthesize allowOSBackgroundCaching;
+@synthesize backgroundCaching;
 @synthesize pendingCacheItems;
 @synthesize totalDownload;
 @synthesize cachePopulationIdentifier;
@@ -86,8 +86,8 @@ - (id)init
   // TODO: Is there a way to avoid object:nil?
   [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(reachabilityChanged:) name:kReachabilityChangedNotification object:nil];
 
-  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(flushMemoryCaches:) name:UIApplicationDidReceiveMemoryWarningNotification object:[UIApplication shared]];
-  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(enteringBackground:) name:UIApplicationDidEnterBackgroundNotification object:[UIApplication shared]];
+  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(flushMemoryCaches:) name:UIApplicationDidReceiveMemoryWarningNotification object:[UIApplication sharedApplication]];
+  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(enteringBackground:) name:UIApplicationDidEnterBackgroundNotification object:[UIApplication sharedApplication]];
 
   [self performSelector:@selector(loadPersistentCacheLists) withObject:nil afterDelay:1.0];