puts drbanner
returns

{"_id"=>"hulk@hulk.li", "_rev"=>"1-d4ff9b321a8bb2440ab46b5a8c34b63f", "kind"=>"users", "name"=>"dr bruce", "email"=>"hulk@hulk.li", "username"=>"banner"}

how can I get  the _rev only value in a variable? :P