add ref to clf spider samples in main README.md
add ref to clf spider samples in main README.md

simonsdave/cloudfeaster_infrastructure,simonsdave/cloudfeaster_infrastructure,simonsdave/cloudfeaster-services,simonsdave/cloudfeaster-services,simonsdave/cloudfeaster-services,simonsdave/cloudfeaster_infrastructure,simonsdave/cloudfeaster_infrastructure