• Open control panel
• Go to: System and Security -> System -> Advanced system settings (on th left) -> environment variables
• Under " System variables" click on "New"
• Name: JAVA_OPTS and Value: -Xms512m -Xmx1024m
• Confirm and apply

Install GIT. During installation, choose the option to install the git bash

Install Java SDK 8 for your platform Install SBT 1.x.x then open a terminal and paste the commands below: (Windows users, right click and select "open git bash here")

git clone https://github.com/LedgerHQ/ledger-wallet-ripple.git
cd ledger-wallet-ripple
sbt build

Install nwjs

cd target/chrome-app
path/to/nwjs .