Add a getter to Elements decoded.. for avoiding to test if prop exists in map.

[jordic]

When decoding a ical, inside the consumer:

ev := &Event{
            Start: start,
            End: end,
            UID: node["UID"].Val,
            Summary: node["SUMMARY"].Val,
        }

If Node["SUMMARY"] don't esists, its a nil pointer.. Provide a node.Get("SUMMARY"), just to test or return ""..