Update Objective-C example to work with changes

Author: hamchapman

iOS Example Obj-C/iOS Example Obj-C/ViewController.h

@@ -9,7 +9,7 @@
 #import <UIKit/UIKit.h>
 #import "PusherSwift/PusherSwift-Swift.h"
 
-@interface ViewController : UIViewController <PusherConnectionDelegate>
+@interface ViewController : UIViewController <PusherDelegate>
 
 @property (nonatomic, strong, readwrite) Pusher *client;
 

iOS Example Obj-C/iOS Example Obj-C/ViewController.m

@@ -62,24 +62,24 @@ - (void)viewDidLoad {
     }];
 }
 
-- (void)connectionStateDidChangeFrom:(enum ConnectionState)old to:(enum ConnectionState)new_ {
+- (void)changedConnectionStateFrom:(enum ConnectionState)old to:(enum ConnectionState)new_ {
     NSLog(@"Old connection: %d, new connection: %d", (int)old, (int)new_);
 }
 
 - (void)debugLogWithMessage:(NSString *)message {
     NSLog(@"%@", message);
 }
 
-- (void)subscriptionDidSucceedWithChannelName:(NSString *)channelName {
-    NSLog(@"Subscribed to %@", channelName);
+- (void)subscribedToChannelWithName:(NSString *)name {
+    NSLog(@"Subscribed to channel %@", name);
 
-    if ([channelName isEqual: @"presence-test"]) {
+    if ([name isEqual: @"presence-test"]) {
         NSLog(@"%@", [(PusherPresenceChannel *)[self.client.connection.channels findWithName:@"presence-test"] members]);
     }
 }
 
-- (void)subscriptionDidFailWithChannelName:(NSString *)channelName response:(NSURLResponse *)response data:(NSString *)data error:(NSError *)error {
-
+- (void)failedToSubscribeToChannelWithName:(NSString *)name response:(NSURLResponse *)response data:(NSString *)data error:(NSError *)error {
+    NSLog(@"Failed to subscribe to channel %@", name);
 }
 
 - (void)didReceiveMemoryWarning {