Clone the repository with the --recursive option to automatically clone submodules:
git clone --recursive https://github.com/geosolutions-it/MapStore2-C028.git
Install NodeJS >= 4.6.1 , if needed, from here.
Update npm to 3.x, using:
npm install -g npm@3
Start the demo locally:
npm cache clean (this is useful to prevent errors on Windows during install)
npm install
npm start
The demo runs at http://localhost:8081 afterwards.
Read more on the wiki.