Separate watcher, create event object

events.go

@@ -0,0 +1,22 @@
+package main
+
+type EventType uint32
+
+const (
+	UPDATE  = 1 << iota
+	DELETE
+)
+
+type Event struct {
+	Type EventType
+	Path string
+	Hash string
+}
+
+func (e Event) IsUpdate() bool {
+	return e.Type & UPDATE == UPDATE
+}
+
+func (e Event) IsDelete() bool {
+	return e.Type & DELETE == DELETE
+}