Describe how I currently start sks_stats_daemon.
Describe how I currently start sks_stats_daemon.

Mention SIGUSR1, etc.
Fix a markdown nit.

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sgrayban/sks_spider,philpennock/sks_spider,philpennock/sks_spider,sgrayban/sks_spider,sgrayban/sks_spider,philpennock/sks_spider