[FEATURE] offline vault client tests
bug fixes and documentation
[CHORE] offline tests for vault client
Merge branch 'feature/nock' into develop
[CHORE] vault client test for blob creation
[CHORE] use strict equal on vault tests
[CHORE] change randomBytes to 256 for vault test
Merge pull request #101 from shekenahglory/develop

Offline vault client tests and improved coverage