Add readme

README.md

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+<!-- Add the image locate in src/assets/test.png -->
+<img src="./src/assets/maimai.png" alt="MaiScore" width="15%">
+
 # MaiScore - A Maimai Score viewer
+Welcome to MaiScore Project!
+
+## What is MaiScore?
+MaiScore is a Maimai Score tracker. It can track your score and show you the score history.
+You can look score form precise chart and precise difficulty.
+All work manually, you need to post your score in the form linked to each chart. If some chart is missing, a feature to request a new chart is coming soon.
+
+## Set up local server
+1. Install Node.js
+2. Clone this repository
+3. Run `npm install` in the repository
+4. Configure your firebase information in 'src/config.js' and in 'Command/pushDeaultValue.cjs'
+5. Use Kurami for run the command to push default value in firebase using 'npm run kurami load:default:data'
+6. Run `npm run dev` to start local server
 
-TODO : Write the readme
+## Libraries
+- [React](https://reactjs.org/)
+- [Vite](https://vitejs.dev/)
+- [Firebase](https://firebase.google.com/)
+- [Tailwind CSS](https://tailwindcss.com/)
+- [React Router](https://reactrouter.com/)
+- [Kurami](https://github.com/nesmon/Kurami)