// Opens connection to Phoenix
_phoenix = [[Phoenix alloc] initWithURL:[NSURL URLWithString:@"ws://localhost:4000/ws"]];
[_phoenix setDelegate:self];
[_phoenix open];

// Creates, listens on, and joins channel
_channel = [[PhoenixChannel alloc] initWithTopic:@"channel:incoming" payload:nil withPhoenix:_phoenix];
[_channel on:@"response:event" handleEventBlock:^(id message) {
    NSLog(@"Message - %@", message);
}];
[_channel join];