Run Karaf as follows ===================================================================

  paulf@paulf-X550LD ~/qneCustomKaraf/karaf $ bin/karaf debug clean
  Listening for transport dt_socket at address: 5005

    Apache Karaf (4.3.0-SNAPSHOT)

  Hit '<tab>' for a list of available commands
  and '[cmd] --help' for help on a specific command.
  Hit '<ctrl-d>' or type 'system:shutdown' or 'logout' to shutdown Karaf.

  karaf@root()> feature:repo-add mvn:com.example.karafvaadin/karafvaadinfeatures/1.0.0-SNAPSHOT/xml/features
  Adding feature url mvn:com.example.karafvaadin/karafvaadinfeatures/1.0.0-SNAPSHOT/xml/features
  karaf@root()> feature:install website

  Then browse ============================================================================

  to localhost:8181