remove pointer ref from Message struct

Author: anthonycorbacho

slack.go

@@ -58,35 +58,35 @@ type Message struct {
 // Attachment let you add more context to a message, making them more useful and effective.
 // See https://api.slack.com/docs/message-attachments
 type Attachment struct {
-	Fallback     *string   `json:"fallback"`
-	Color        *string   `json:"color"`
-	PreText      *string   `json:"pretext"`
-	AuthorName   *string   `json:"author_name"`
-	AuthorLink   *string   `json:"author_link"`
-	AuthorIcon   *string   `json:"author_icon"`
-	Title        *string   `json:"title"`
-	TitleLink    *string   `json:"title_link"`
-	Text         *string   `json:"text"`
-	ImageUrl     *string   `json:"image_url"`
-	Fields       []*Field  `json:"fields"`
-	Footer       *string   `json:"footer"`
-	FooterIcon   *string   `json:"footer_icon"`
-	Timestamp    *int64    `json:"ts"`
-	MarkdownIn   *[]string `json:"mrkdwn_in"`
-	Actions      []*Action `json:"actions"`
-	CallbackID   *string   `json:"callback_id"`
-	ThumbnailUrl *string   `json:"thumb_url"`
+	Fallback     string   `json:"fallback"`
+	Color        string   `json:"color"`
+	PreText      string   `json:"pretext"`
+	AuthorName   string   `json:"author_name"`
+	AuthorLink   string   `json:"author_link"`
+	AuthorIcon   string   `json:"author_icon"`
+	Title        string   `json:"title"`
+	TitleLink    string   `json:"title_link"`
+	Text         string   `json:"text"`
+	ImageUrl     string   `json:"image_url"`
+	Fields       []Field  `json:"fields"`
+	Footer       string   `json:"footer"`
+	FooterIcon   string   `json:"footer_icon"`
+	Timestamp    int64    `json:"ts"`
+	MarkdownIn   []string `json:"mrkdwn_in"`
+	Actions      []Action `json:"actions"`
+	CallbackID   string   `json:"callback_id"`
+	ThumbnailUrl string   `json:"thumb_url"`
 }
 
 // AddField appends a new field to the Attachment
 func (attachment *Attachment) AddField(field Field) *Attachment {
-	attachment.Fields = append(attachment.Fields, &field)
+	attachment.Fields = append(attachment.Fields, field)
 	return attachment
 }
 
 // AddAction appends a new Action to the Attachment
 func (attachment *Attachment) AddAction(action Action) *Attachment {
-	attachment.Actions = append(attachment.Actions, &action)
+	attachment.Actions = append(attachment.Actions, action)
 	return attachment
 }