FIX: use compare url for push event button url

Author: EverythingSuckz

types/commit.go

@@ -5,6 +5,7 @@ type PushEvent struct {
 	Commits []Commit   `json:"commits,omitempty"`
 	Action  string     `json:"action,omitempty"`
 	Repo    Repository `json:"repository,omitempty"`
+	Compare string     `json:"compare,omitempty"`
 }
 
 type Commit struct {

utils/parser.go

@@ -70,7 +70,7 @@ func CreateContents(meta *types.Metadata) (text string, markupText string, marku
 		// No Activity Types
 		text = createPushText(event)
 		markupText = "Open Changes"
-		markupUrl = event.Repo.HTMLURL
+		markupUrl = event.Compare
 	case "release":
 		event := event.(*types.ReleaseEvent)
 		if !Contains([]string{"published", "released"}, event.Action) {