A simple function for sending messages to a HipChat room.

hipchat.m

static void SendHipChatMessage(NSString *token, NSString *room, NSString *message)
{
    NSDictionary *params = @{
        @"auth_token": token,
        @"format": @"json",
        @"room_id": room,
        @"from": @"Mapkin App",
        @"message": message,
        @"message_format": @"text",
        @"notify": @1,
        @"color": @"purple",
    };

    NSURL *url = [NSURL URLWithString:@"https://api.hipchat.com/v1"];
    AFHTTPClient *client = [[AFHTTPClient alloc] initWithBaseURL:url];
    [client setDefaultHeader:@"Accept" value:@"application/json"];

    [client postPath:@"rooms/message"
          parameters:params
             success:NULL
             failure:NULL];
}

Thanks John!