Allow cards to be unclosed (dearchived, sent to board)

card.go

@@ -189,6 +189,15 @@ func (c *Card) Archive() ([]byte, error) {
 	return c.client.Put("/cards/"+c.Id+"/closed", payload)
 }
 
+// SendToBoard will dearchive the card, or send the card to the board back from archive
+// https://developers.trello.com/advanced-reference/card#put-1-cards-card-id-or-shortlink-closed
+func (c *Card) SendToBoard() ([]byte, error) {
+	payload := url.Values{}
+	payload.Set("value", "false")
+
+	return c.client.Put("/cards/"+c.Id+"/closed", payload)
+}
+
 // MoveToList will move the card to another list
 // https://developers.trello.com/advanced-reference/card#put-1-cards-card-id-or-shortlink-idlist
 func (c *Card) MoveToList(list *List) ([]byte, error) {