emit superschema in modern syntax

[namenu]

closes #15

Before

{:objects {:User {...}
           ...
 :queries {:user {...}
           ...
 :mutations {:createUser {...}
             ...}
 ...}

After

{:objects  {:User {...}
            :Query {:fields {:user {...}
                             ...}}
            :Mutation {:fields {:createUser {...}
                                ...}}
 ...}