
This method will genrate new owner, active, posting, and memo keys for the
new account which will be controlable by this wallet. There is a fee
associated with account creation that is paid by the creator. The current
account creation fee can be found with the 'info' wallet command.

Parameters:
    creator: The account creating the new account (type: const string &)
    new_account_name: The name of the new account (type: const string &)
    json_meta: JSON Metadata associated with the new account (type: const
	string &)
    broadcast: true if you wish to broadcast the transaction (type: bool)
