proposalId(string) The ID of the proposal to vote on. This is an auto-incrementing integer in the Governor Alpha contract.
support(boolean) A boolean of true for 'yes' or false for 'no' on the proposal vote. To create an 'empty ballot' call this method twice using true and then false for this parameter.
RETURN(object) Returns an object that contains the
scomponents of an Ethereum signature as hexadecimal strings.