Making the name of the card optional
Fix the bad named function.
Remove data which is not used
Adding an error callback (to know what's what)
The term params is not right, for the moment naming it payload only here
Another way to make the success callback (may be simpler to understand
than the current)
Adding the :sync t flag commented (not to use but help in debugging)
Carnage, finally, i got how to extract the data - i do not like those
struct thingy (again, clojure rocks!)