add example of using recursive option to readme
add example of using recursive option to readme

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