Merge pull request #3 from shmumer/master

use edn/read-string for reading queries
Added tempid resolution option
removed dump ns and handler
is there anything you *can* do with a datomic.db.Datum? Anyway, attribute id->ident translation option in place.
Results post-processing (pre-pagination) implemented. Ridiculously unprincipled atm but I don't have a practical alternative for now
more accurate test nomenclature
passing db handle to post-fn now. Apparently eval means global vars only, :(
client-id and token based authentication
fixed error message
add application/json as a valid accept header for queries