Update README.md

Author: lipi17dpatnaik

HeadPose/README.md

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 Please see the following [blog post](https://www.learnopencv.com/head-pose-estimation-using-opencv-and-dlib/) for more details about this code
 
 [Head Pose Estimation using OpenCV and Dlib](https://www.learnopencv.com/head-pose-estimation-using-opencv-and-dlib/)
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+# AI Courses by OpenCV
+
+Want to become an expert in AI? [AI Courses by OpenCV](https://opencv.org/courses/) is a great place to start. 
+
+<a href="https://opencv.org/courses/">
+<p align="center"> 
+<img src="https://www.learnopencv.com/wp-content/uploads/2020/04/AI-Courses-By-OpenCV-Github.png">
+</p>
+</a>