add readme 📖

README.md

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+##  **Uniswap Clone** :unicorn:
+![GitHub repo size](https://img.shields.io/github/repo-size/sid86-dev/uniswap-clone?style=social) ** ![Lines of code](https://img.shields.io/tokei/lines/github/sid86-dev/uniswap-clone?style=social) ** ![GitHub top language](https://img.shields.io/github/languages/top/sid86-dev/uniswap-clone?style=social)
+> ##### [Preview](https://uniswap-weld.vercel.app/),  Uniswap clone made using frontend frameworks, React.js and Next.js. The contract is deployed on rinkby etherium test network.
+
+<br/>
+
+Folder | Content | 
+--- | --- |
+Client | Full frontend of the app |
+Studio | Sanity CMS backend |
+Smart Contract | Hardhat Solidity dev environment
+
+***
+
+#### Client : [`Next.js`](https://nextjs.org/)
+#### Production : [`Vercel`](https://vercel.com/)
+#### Web3 Development : [`Hardhat`](https://hardhat.org/)
+#### CMS : [`Sanity`](https://www.sanity.io/)
+#### Testing : [`Rinkby`](https://www.rinkeby.io/#stats)
+
+***
+
+
+<p align="center">
+<img  src="https://github.com/sid86-dev/uniswap-clone/blob/master/client/assets/uniswap.png" width="100px" /> 
+  </p>