Community Demo - PnP/SPFx Yeoman Generator 1.7 Jest, webpack analyzer, style linter

Latest updates around the PnP/SPFx Yeoman Generator with additional capabilities on Jest, Webpack analyzer, style linter and more. The demo taken from the SharePoint Framework Special Interest Group recording from 17th of January 2019. Presenter - Stefan Bauer (n8d) - @StfBauer More details on the SharePoint dev community calls from http://aka.ms/sppnp.