Fix deprecation warnings and use RKValueTransformer API's for configuring date parsing

Author: Blake Watters

Examples/RKTwitter/Classes/RKTwitterAppDelegate.m

@@ -64,7 +64,10 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
 
     // Update date format so that we can parse Twitter dates properly
     // Wed Sep 29 15:31:08 +0000 2010
-    [RKObjectMapping addDefaultDateFormatterForString:@"E MMM d HH:mm:ss Z y" inTimeZone:nil];
+    NSDateFormatter *dateFormatter = [NSDateFormatter new];
+    dateFormatter.dateFormat = @"E MMM d HH:mm:ss Z y";
+    dateFormatter.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0];
+    [[RKValueTransformer defaultValueTransformer] insertValueTransformer:dateFormatter atIndex:0];
 
     // Register our mappings with the provider using a response descriptor
     RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:statusMapping

Examples/RKTwitterCoreData/Classes/RKTwitterAppDelegate.m

@@ -65,7 +65,10 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
 
     // Update date format so that we can parse Twitter dates properly
     // Wed Sep 29 15:31:08 +0000 2010
-    [RKObjectMapping addDefaultDateFormatterForString:@"E MMM d HH:mm:ss Z y" inTimeZone:nil];
+    NSDateFormatter *dateFormatter = [NSDateFormatter new];
+    dateFormatter.dateFormat = @"E MMM d HH:mm:ss Z y";
+    dateFormatter.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0];
+    [[RKValueTransformer defaultValueTransformer] insertValueTransformer:dateFormatter atIndex:0];
 
     // Register our mappings with the provider
     RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:tweetMapping