Fixed ical-go package include

vendor/github.com/laurent22/ical-go/calendar_event.go

@@ -0,0 +1,51 @@
+package ical
+
+import (
+	"time"
+)
+
+type CalendarEvent struct {
+	Id            string
+	Summary       string
+	Description   string
+	Location      string
+	URL           string
+	CreatedAtUTC  *time.Time
+	ModifiedAtUTC *time.Time
+	StartAt       *time.Time
+	EndAt         *time.Time
+}
+
+func (this *CalendarEvent) StartAtUTC() *time.Time {
+	return inUTC(this.StartAt)
+}
+
+func (this *CalendarEvent) EndAtUTC() *time.Time {
+	return inUTC(this.EndAt)
+}
+
+func (this *CalendarEvent) Serialize() string {
+	buffer := new(strBuffer)
+	return this.serializeWithBuffer(buffer)
+}
+
+func (this *CalendarEvent) ToICS() string {
+	return this.Serialize()
+}
+
+func (this *CalendarEvent) serializeWithBuffer(buffer *strBuffer) string {
+	serializer := calEventSerializer{
+		event:  this,
+		buffer: buffer,
+	}
+	return serializer.serialize()
+}
+
+func inUTC(t *time.Time) *time.Time {
+	if t == nil {
+		return nil
+	}
+
+	tUTC := t.UTC()
+	return &tUTC
+}