ciao-cert: Update README.md to reflect ciao-cert changes
ciao-cert: Update README.md to reflect ciao-cert changes

The ciao-cert usage information is updated along with a paragraph about
the new -dump command line flag.

Signed-off-by: Rob Bradford <c49e1dc14cd52e2644816db47123896e0ac79025@intel.com>

mcastelino/ciao,mrkz/ciao,tpepper/ciao,jorgevgut/ciao,markdryan/ciao,wcwxyz/ciao,wcwxyz/ciao,tpepper/ciao,ciao-project/ciao,erick0z/ciao,mcastelino/ciao,wcwxyz/ciao,jorgevgut/ciao,jorgevgut/ciao,ciao-project/ciao,matthewrsj/ciao,01org/ciao,markdryan/ciao,rbradford/ciao,kaccardi/ciao,kaccardi/ciao,rbradford/ciao,01org/ciao,mrkz/ciao,mcastelino/ciao,erick0z/ciao,obedmr/ciao,tpepper/ciao,mrkz/ciao,erick0z/ciao,matthewrsj/ciao,obedmr/ciao,obedmr/ciao,matthewrsj/ciao