[Cryptography] Add README for CryptographyClient and samples to API docs#4612

Merged

sophiajt merged 3 commits intoAzure:masterfrom sophiajt:update_readme_api_docs

Aug 1, 2019

+175-9

Commits on Aug 1, 2019

"Add README for CryptographyClient and samples to API docs"
Jonathan Turner
committed
"WIP"
Jonathan Turner
committed
"Address feedback"
Jonathan Turner
committed