add (stubbed) updateGopherFeed function

fetch/fetch.go

@@ -53,9 +53,7 @@ func UpdateFeed(f *core.Feed) error {
 		// TODO
 		fallthrough
 	case "gopher", "gophers":
-		// return updateGopherFeed(f)
-		// TODO
-		fallthrough
+		return updateGopherFeed(f)
 	default:
 		return fmt.Errorf("Unsupported protocol '%s'", f.FeedLink.Scheme)
 	}

fetch/gopher.go

@@ -33,6 +33,12 @@ func newGopherFeed(remoteURL *url.URL, title string) (*core.Feed, error) {
 	return nil, fmt.Errorf("Feeds served over gopher are currently unsupported.")
 }
 
+// updateGopherFeed will check an existing core.Feed for updates
+func updateGopherFeed(*core.Feed) error {
+	// TODO
+	return fmt.Errorf("Feeds served over gopher are currently unsupported.")
+}
+
 // newGopherPage will create a new core.Page given a gopher url
 func newGopherPage(remoteURL *url.URL, title string) (*core.Page, error) {
 	var page core.Page