IPUShow，更新IPUPeerTubePlugin.m文件。

display-center/display-center/IPUPeerTubePlugin.m

@@ -51,7 +51,7 @@
        if (!isSuccess) {
            [self error:@""];
        }else {
            [self callback:@"aa"]; //传空串的话，触发不了callback回调
            [self callback:@"0"]; //传空串的话，触发不了callback回调
        }
    }];
}
@@ -312,7 +312,7 @@ parmas[2]: 必传，count
    vc.playerType = IPUPeerTubeVideoPlayerTypeEmbedPath;
    vc.videoEmbedPath = embedPath;
    vc.backBlock = ^(){
        [self callback:@"aa"];
        [self callback:@"0"];
        NSLog(@"播放页面返回的CallBack～～！");
    };
    vc.modalPresentationStyle = UIModalPresentationFullScreen;