Adding id_score to BaseDocument

[cazwazacz]

#104

In the application I am working on, we need to evaluate the id_score of the user. Currently the User.find method returns a User object, but with no reference to the id_score.

I added the id_score to the things returned in the BaseDocument object.

I haven't added any tests yet - I would like to know first if this is something you are open to.

Thanks
Allan