Update vendor (#1265)

vendor/github.com/slack-go/slack/reminders.go

@@ -21,6 +21,11 @@ type reminderResp struct {
 	Reminder Reminder `json:"reminder"`
 }
 
+type remindersResp struct {
+	SlackResponse
+	Reminders []Reminder `json:"reminders"`
+}
+
 func (api *Client) doReminder(ctx context.Context, path string, values url.Values) (*Reminder, error) {
 	response := &reminderResp{}
 	if err := api.postMethod(ctx, path, values, response); err != nil {
@@ -29,6 +34,31 @@ func (api *Client) doReminder(ctx context.Context, path string, values url.Value
 	return &response.Reminder, response.Err()
 }
 
+func (api *Client) doReminders(ctx context.Context, path string, values url.Values) ([]*Reminder, error) {
+	response := &remindersResp{}
+	if err := api.postMethod(ctx, path, values, response); err != nil {
+		return nil, err
+	}
+
+	// create an array of pointers to reminders
+	var reminders = make([]*Reminder, 0, len(response.Reminders))
+	for _, reminder := range response.Reminders {
+		reminders = append(reminders, &reminder)
+	}
+
+	return reminders, response.Err()
+}
+
+// ListReminders lists all the reminders created by or for the authenticated user
+//
+// See https://api.slack.com/methods/reminders.list
+func (api *Client) ListReminders() ([]*Reminder, error) {
+	values := url.Values{
+		"token": {api.token},
+	}
+	return api.doReminders(context.Background(), "reminders.list", values)
+}
+
 // AddChannelReminder adds a reminder for a channel.
 //
 // See https://api.slack.com/methods/reminders.add (NOTE: the ability to set