code: function(bankAccount, success, error) {
      success = success || noop;
      error = error || noop;
      exec(success, error, "CordovaStripe", "createBankAccountToken", [bankAccount]);
    }
docs: Create a bank account token
  @param bankAccount {module:stripe.BankAccountTokenParams} Bank account information
  @param {Function} success Success callback
  @param {Function} error Error callback