Authorize microphone permission before calling

- (void)toStart {

    [[DigitalManager manager] initNewWithAppId:AppId appKey:AppKey conversationId:ConversationId region:REGION block:^(BOOL isSuccee, NSString *errorMsg) {
        if (isSuccee) {
            [[DigitalManager manager] toStart];
        } else {
            NSLog(@"GJDigitalDemo==errorMsg==%@",errorMsg);
        }
    }];
}