travelynx.conf: add influxdb documentation

		spare    => 2,

	},

	influxdb => {

		# travelynx can log statistics and performance attributes to InfluxDB.

		# To do so, create a travelynx database in your InfluxDB, and point url

		# (below) to the corresponding write URL.  The URL may use anything from

		# plain HTTP to HTTPS with password authentication.

		## url => 'https://user:password@host/write?db=travelynx',

	},

	mail => {

		# To disable outgoing mail for development purposes, uncomment the

		# following line.  Mails will instead be logged as Mojolicious "info"