Update README: Add note about ts in textfile

This closes prometheus#1284
ii · Mar 19, 2019 · d2136aa · d2136aa
1 parent 19e5bb6
commit d2136aa
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/README.md b/README.md
@@ -92,7 +92,7 @@ that are tied to a machine.
 To use it, set the `--collector.textfile.directory` flag on the Node exporter. The
 collector will parse all files in that directory matching the glob `*.prom`
 using the [text
-format](http://prometheus.io/docs/instrumenting/exposition_formats/).
+format](http://prometheus.io/docs/instrumenting/exposition_formats/). **Note:** Timestamps are not supported.
 
 To atomically push completion time for a cron job:
 ```