[DATALAD RUNCMD] Autoupdate readme

=== Do not change lines below ===
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  "26f4f0eec76de27fea98e153460cae502bd25b61"
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 "cmd": "./.update-readme-help.py",
 "exit": 0,
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 "pwd": "."
}
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README.md

@@ -27,8 +27,8 @@ usage: duct [-h] [--version] [-p OUTPUT_PREFIX]
             [--summary-format SUMMARY_FORMAT] [--colors] [--clobber]
             [-l {NONE,CRITICAL,ERROR,WARNING,INFO,DEBUG}] [-q]
             [--sample-interval SAMPLE_INTERVAL]
-            [--report-interval REPORT_INTERVAL] [-c {all,none,stdout,stderr}]
-            [-o {all,none,stdout,stderr}]
+            [--report-interval REPORT_INTERVAL] [--fail-time FAIL_TIME]
+            [-c {all,none,stdout,stderr}] [-o {all,none,stdout,stderr}]
             [-t {all,system-summary,processes-samples}]
             command [command_args ...] ...
 
@@ -105,6 +105,12 @@ options:
   --report-interval REPORT_INTERVAL, --r-i REPORT_INTERVAL
                         Interval in seconds at which to report aggregated
                         data. (default: 60.0)
+  --fail-time FAIL_TIME, --f-t FAIL_TIME
+                        If command fails in less than this specified time,
+                        duct would remove logs. Set to 0 if you would like to
+                        keep logs for a failing command regardless of its run
+                        time. Set to negative (e.g. -1) if you would like to
+                        not keep logs for any failing command. (default: 3.0)
   -c {all,none,stdout,stderr}, --capture-outputs {all,none,stdout,stderr}
                         Record stdout, stderr, all, or none to log files. You
                         can also provide value via DUCT_CAPTURE_OUTPUTS env