Update noninteractive documentation

README.md

@@ -33,10 +33,11 @@ Which will direct you to a URL that asks you to allow access after which you can
 ### Non-Interactive Mode
 
 If your usecase involves scrobbling with no intervention (like as part of a script) you can use the argument 
--n along with parameters "delete" or "keep" which delete or keep the log file respectively.
+-n along with parameters "delete", "keep" or "delete-on-success" which delete or keep the log file respectively.
+"delete-on-success" only deletes the file if there have been zero scrobbling fails and keeps the file untouched
+otherwise - this is the recommended parameter for no intervention scrobbling.
 
 **A word of warning:** The "delete" option will always delete your log after sending scrobbles, failure or success.
-A parameter which only deletes if there are no failed scrobbles will be coming in a later release.
 
 ### Compilation
 

src/rb-scrobbler.go

@@ -25,7 +25,7 @@ type Track struct {
 func main() {
 	logPath := flag.String("f", "", "Path to .scrobbler.log")
 	offset := flag.String("o", "0h", "Time difference from UTC (format +10h or -10.5h")
-	nonInteractive := flag.String("n", "", "Non Interactive Mode: Automatically (\"keep\" or \"delete\") at end of program")
+	nonInteractive := flag.String("n", "", "Non Interactive Mode: Automatically (\"keep\", \"delete\" or \"delete-on-success\") at end of program")
 	auth := flag.Bool("auth", false, "First Time Authentication")
 	flag.Parse()