As a Node driver engineer,
I want to remove outdated and redundant BSON documentation from the js-bson readme,
So that users are not confused by outdated documentation.

Notes

We can use this as an opportunity to transfer any information that is still valid from js-bson's readme into the driver docs (like default values).

Acceptance Criteria

• audit the existing bson docs for useful information that does not exist in the current BSON documentation
• remove the docs from the js-bson readme
• add a link to the Node driver's documentation (that includes BSON's documentation)