Update README.md

README.md

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 # MusicTheory
-Visual music theory exercises. 
+Visual music theory exercises, for beginners.
+
+Frontend developed with React, Material UI and written in Typescript. 
+Backend developed in NodeJS with Express and uses Sequilize for database management.
+
+## Features
+
+- Interactive piano UI.
+- Two types of excercises.
+- User's can register and login to save their progress.
+- Back-end driven. Excercises are stored on the database, and dynamically displayed on the front-end.
+- Robust, redux-like state management for user authorisation, excercises, and the users progress.
+
 
 ## Installation
 1. Make sure you have the latest version of Docker Desktop installed.
 2. Clone this repository
 3. Run `docker-compose up --build` from the root of the directory.
-4. Access http://localhost:3000/ on your browser.
+4. Access http://localhost:3000/ on your browser.