Added srpskainfo crawler

internal/model/model.go

@@ -26,13 +26,20 @@ type DisplayArticle struct {
 }
 
 const (
-	KlixSource = 1
+	KlixSource       = 1
+	SrpskainfoSource = 2
 )
 
 func SourceName(sourceId int) string {
 	switch sourceId {
 	case KlixSource:
 		return "klix"
+	case SrpskainfoSource:
+		return "srpskainfo"
 	}
 	return "starenovine"
 }
+
+const (
+	Terminator = "TERMINATED"
+)