You might want to prefer a Unix environment (Linux or macOS) for this requires a shell, mostly for npm.
First check that you have git, npm installed (refer to the documentation).
Download the source code.
git clone <repository url>
When download is completed go to the working directory: cd PrellOne-client.
Install dependencies by running npm install.
From there you can run the server with the following command:
npm start
The server will watch all the files in the project and restart after each modification saved.
Temporary
The documentation has not been merged yet on the master branch but is available on the develop branch