code: public static VaadinForHeroku herokuServer(final VaadinForHeroku server) {
  
          return server
                  .withMemcachedSessionManager(MemcachedManagerBuilder.memcacheAddOn())
                  .withHttpPort(Integer.parseInt(System.getenv(VaadinForHeroku.PORT)))
                  .withProductionMode(true)
                  .openBrowser(false);
      }
docs: Configures the given server for Heroku
  
  @param server the server to be configured for heroku environment
  @since 0.3