added Check Fatal Error func

levellogger.go

@@ -178,3 +178,9 @@ func (ll LevelLogger) Blank(n int) {
 	}
 	ll.blankLog.Print(outs)
 }
+
+func (ll LevelLogger) CheckFerr(e error, msg string) {
+	if e != nil {
+		ll.Fatal(e, msg)
+	}
+}