For installing you need make this actions:
cd "path to public folder of your web-server" git clone https://github.com/KIT-IPE/katrinTankViewer.git "folder name for repository" cd "folder name for repository" git submodule init && git submodule update --recursive
Now demo app is accessible from path: localhost/"folder name for repository"/app
For using demo app, you need WebGL-compatible web browser.
*Sometimes you need enable WebGL in your browser. How make this you can read here: