v0.6.8

Changelog

d066427 "add cli and secretboxe"
9557dfa Attempt to put version properly..
756097b Chain freezer: pass a --block-num instead of hard-coded updateauth.
999b993 Clean-up params.. kms-gcp and passphrase vault support..
6aead68 Couple fixups. Make sure we import crypto_rand, thanks to safe programming habits.
2c445e9 Fail properly if box doesn't open.
cb65a4a Fixup add. Added docs for create. Wow this is really cool.
77a382e Merge branch 'master' of github.com:eoscanada/eosc
bef278a Updated README
77c8ffb keyring is now pass as a flag
79f6566 kms gcp implemented