code: public static VaadinForHeroku localServer(final VaadinForHeroku server) {
  
          return server.withHttpPort(VaadinForHeroku.DEFAULT_PORT)
                  .withProductionMode(false)
                  .openBrowser(true);
      }
docs: Configures the given server for local development
  
  @param server the server to be configured for local development
  @since 0.3