Adding support for bind attribute

:+1: ...for me the tests are hard to follow with references to include and exclude all over :-) ...could we use some real models for this purpose(at least to cover some common cases)...ex: User model...Id and RegisteredDate are autogenerated by the application so should always be excluded from binding(type level)...IsAdmin property(type level excluded, but included at parameter level...scenario: an Administrator updating a user's profile)..
Not a high pri for now, but in future for someone reading the tests it would be easy for them too...