Added README.md file

README.md

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+<h1 align="center">Open Source at LinkedIn</h1>
+
+<p align="center">
+<img src="https://user-images.githubusercontent.com/54114888/130017264-86a8d728-ff58-48c5-a317-64665b8ec333.png" width="180" height="180">
+</p>
+
+## 📜 Description:
+Listing of all our public GitHub projects. The open source projects behind the world's largest professional network. These are the technologies we created to connect the world's professionals to make them more productive and successful.
+
+## 📽 Sample Screenshots:
+![Screenshot (276)](https://user-images.githubusercontent.com/54114888/130174856-53cefc5b-2ef2-40fe-8ab4-45bedc7a986c.png)
+
+![Screenshot (277)](https://user-images.githubusercontent.com/54114888/130174866-71f4e7ff-25af-4277-a7ac-4f54cd4aafe6.png)
+
+![Screenshot (278)](https://user-images.githubusercontent.com/54114888/130174869-02a388c7-016b-44d7-910a-1df96ebb2162.png)
+
+
+## 💥 How to Contribute?
+
+[![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](http://makeapullrequest.com)
+[![Open Source Love svg2](https://badges.frapsoft.com/os/v2/open-source.svg?v=103)](https://github.com/ellerbrock/open-source-badges/) 
+
+- Take a look at the Existing [Issues](https://github.com/linkedin/linkedin.github.com/issues) or create your own Issues!
+- Wait for the Issue to be assigned to you after which you can start working on it.
+- Fork the Repo and create a Branch for any Issue that you are working upon.
+- Create a Pull Request which will be promptly reviewed and suggestions would be added to improve it.
+- Add Screenshots to help me know what this Code is all about.