[Docs] Add mmocr link (#941)

* [Docs] Add mmocr link

* Update README.md

* Update README_zh-CN.md

README.md

@@ -17,7 +17,9 @@ research projects as below:
 - [MMEditing](https://github.com/open-mmlab/mmediting): Image and video editing toolbox
 - [MMPose](https://github.com/open-mmlab/mmpose): Pose estimation toolbox and benchmark
 - [MMAction2](https://github.com/open-mmlab/mmaction2): Action understanding toolbox and benchmark
+- [MMTracking](https://github.com/open-mmlab/mmtracking): Video perception toolbox and benchmark
 - [MMClassification](https://github.com/open-mmlab/mmclassification): Image classification toolbox and benchmark
+- [MMOCR](https://github.com/open-mmlab/mmocr): A Comprehensive Toolbox for Text Detection, Recognition and Understanding
 
 It provides the following functionalities.
 

README_zh-CN.md

@@ -10,15 +10,15 @@
 
 MMCV 是一个面向计算机视觉的基础库，它支持了很多开源项目，例如：
 
-- [MMCV](https://github.com/open-mmlab/mmcv): 计算机视觉基础库
-- [MMClassification](https://github.com/open-mmlab/mmclassification): 图像分类工具箱
 - [MMDetection](https://github.com/open-mmlab/mmdetection): 目标检测工具箱
 - [MMDetection3D](https://github.com/open-mmlab/mmdetection3d): 新一代通用 3D 目标检测平台
 - [MMSegmentation](https://github.com/open-mmlab/mmsegmentation): 语义分割工具箱
+- [MMEditing](https://github.com/open-mmlab/mmediting): 图像视频编辑工具箱
+- [MMPose](https://github.com/open-mmlab/mmpose): 姿态估计工具箱
 - [MMAction2](https://github.com/open-mmlab/mmaction2): 新一代视频理解工具箱
 - [MMTracking](https://github.com/open-mmlab/mmtracking): 一体化视频目标感知平台
-- [MMPose](https://github.com/open-mmlab/mmpose): 姿态估计工具箱
-- [MMEditing](https://github.com/open-mmlab/mmediting): 图像视频编辑工具箱
+- [MMClassification](https://github.com/open-mmlab/mmclassification): 图像分类工具箱
+- [MMOCR](https://github.com/open-mmlab/mmocr): 全流程文字检测识别理解工具包
 
 MMCV 提供了如下众多功能：