Sources for the official Vaadin demo application: http://demo.vaadin.com/dashboard
Run the Maven 'install' target and deploy the resulting WAR file to your Java application server.
You need a license for Vaadin Charts to compile the widgetset. You can get a free 30 day trial license by going to https://vaadin.com/directory#addon/vaadin-charts and clicking the orange "Free trial key" button. It gives you a trial key. See the help section which shows you how to install the key.
Basically you need to create a file name ".vaadin.charts.developer.license" in your HOME directory, and place the key there.
Run 'mvn -Pproduction-mode verify' to run the Vaadin TestBench tests.
Note: You need a valid Vaadin TestBench license and Firefox browser installed to run the tests.
The source code is released under Apache 2.0.
The application uses the Vaadin Charts 2 add-on, which is released under the Commercial Vaadin Addon License: https://vaadin.com/license/cval-3