Crud object format mismatch

[gabipetrovay]

There are the following use cases:

1. Create - this requires a document
2. Update - this requires an object with update operators.

The documentation does not specify:

• where the create document should be send (in d or q?)
• what is the create document format, flat or hierarchic? Currently, one cannot create a document that has fields containing dots (i.e. nested fields).

[ottiker]

For both, insert and update, the data must be sent in "d". A insert object is saved as it comes only for updating a sub-document the keys must be flatten.

[gabipetrovay]

We should specify these in the Readme. And this means that this is an issue in bind-form.