update readme

Author: wang-xinyu

README.md

@@ -10,6 +10,7 @@ All the models are implemented in pytorch/mxnet/tensorflown first, and export a
 
 ## News
 
+- `23 May 2021`. [SsisyphusTao](https://github.com/SsisyphusTao): CenterNet DLA-34 with DCNv2 plugin.
 - `17 May 2021`. [ybw108](https://github.com/ybw108): arcface LResNet100E-IR and MobileFaceNet.
 - `6 May 2021`. [makaveli10](https://github.com/makaveli10): scaled-yolov4 yolov4-csp.
 - `29 Apr 2021`. [upczww](https://github.com/upczww): hrnet segmentation w18/w32/w48, ocr branch also.
@@ -24,7 +25,6 @@ All the models are implemented in pytorch/mxnet/tensorflown first, and export a
 - `5 Mar 2021`. [chgit0214](https://github.com/chgit0214) added the LPRNet.
 - `31 Jan 2021`. RepVGG added by [upczww](https://github.com/upczww).
 - `29 Jan 2021`. U-Net added by [YuzhouPeng](https://github.com/YuzhouPeng).
-- `24 Jan 2021`. IBN-Net added by [TCHeish](https://github.com/TCHeish), PSENet optimized, YOLOv5 v4.0 INT8, etc.
 
 ## Tutorials
 
@@ -86,6 +86,7 @@ Following models are implemented.
 |[rcnn](./rcnn)| FasterRCNN and MaskRCNN, model from [detectron2](https://github.com/facebookresearch/detectron2) |
 |[tsm](./tsm)| TSM: Temporal Shift Module for Efficient Video Understanding, ICCV2019 |
 |[scaled-yolov4](./scaled-yolov4)| yolov4-csp, pytorch from [WongKinYiu/ScaledYOLOv4](https://github.com/WongKinYiu/ScaledYOLOv4) |
+|[centernet](./centernet)| CenterNet DLA-34, pytorch from [xingyizhou/CenterNet](https://github.com/xingyizhou/CenterNet) |
 
 ## Model Zoo