code: function(key, success, error) {
      success = success || noop;
      error = error || noop;
      exec(success, error, "CordovaStripe", "setPublishableKey", [key]);
    }
docs: Set publishable key
  @param key {string} Publishable key
  @param [success] {Function} Success callback
  @param [error] {Function} Error callback