Follow the below steps to install wittr app on Windows:
1. Install Node.js.
2. Install Git.
3. Create a folder and open Command Prompt and type git clone https://github.com/jakearchibald/wittr
4. After the repository is cloned then go to wittr directory, open Command Prompt and type npm install. This will install all the dependencies which are required for the project. If there are no errors while installing dependencies then you can skip steps 5 and 6