fix message for --help and --version arguments to include "and exit"
fix message for --help and --version arguments to include "and exit"

weheartit/image_optim,ramiroaraujo/image_optim,weheartit/image_optim,mihailim/image_optim,toy/image_optim,mihailim/image_optim,toy/image_optim,weheartit/image_optim,toy/image_optim,ramiroaraujo/image_optim,ramiroaraujo/image_optim,mihailim/image_optim