README: One more badge
README: One more badge

Ciao is documented on godoc, let's show that.

Signed-off-by: Samuel Ortiz <0ba86cb3f08bbb861958e54bd3438887adb4263c@linux.intel.com>

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