RUBY-2173 Improvements to Client-Side Encryption documentation (#1782)

* started adding auto encryption options to the client documentation

* add the rest of the options to client options

* change symbols to strings

* remove unnecessary braces

* added required documentation items from the spec

* add some expected outcomes as comments in code

* added a lot of info about client options

* link from create client

* properly connect cse tutorial to client tutorial

* fix link

* some cleanup

* add a link in mongocryptd installations ection

* fix bold code

Author: Emily Giurleo