update readme

bitly · Mar 5, 2020 · 951fbac · 951fbac
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commit 951fbac
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diff --git a/README.md b/README.md
@@ -58,4 +58,5 @@ Usage of ./statsdaemon:
   -receive-counter="": Metric name for total metrics received per interval
   -tcpaddr="": TCP service address, if set
   -version=false: print version string
+  -heartbeat-file="": heartbeat file to update after a successful write to graphite
 ```