Display information what's going on when trying to display not existing event
Display information what's going on when trying to display not existing event

Issue: #602

mpraglowski/rails_event_store,RailsEventStore/rails_event_store,arkency/rails_event_store,arkency/rails_event_store,RailsEventStore/rails_event_store,arkency/rails_event_store,arkency/rails_event_store,RailsEventStore/rails_event_store,RailsEventStore/rails_event_store,mpraglowski/rails_event_store,mpraglowski/rails_event_store,mpraglowski/rails_event_store