Update FAQ: link to preprint and Poorter paper etc.
Update FAQ: link to preprint and Poorter paper etc.

jshoyer/plantcv,stiphyMT/plantcv,danforthcenter/plantcv,danforthcenter/plantcv,stiphyMT/plantcv,stiphyMT/plantcv,danforthcenter/plantcv,jshoyer/plantcv