make rhash optional

TODO.md

@@ -14,6 +14,7 @@
 * ✓ Wrap content inside item ⚠️  atom calls it entry
 * ✓ Implement atom
 * ✓ Cleanup
+* Show Feed name instead of Link
 * Change flags to os.Args[1] for config path
 * Make Rhash optional
 

telegram/telegram.go

@@ -83,6 +83,9 @@ func NewTelegramSender(transport http.RoundTripper, authToken string) TelegramSe
 }
 
 func genIVLink(link, rhash string) string {
+	if rhash == "" {
+		return link
+	}
 	query := url.Values{}
 	query.Set("url", link)
 	query.Set("rhash", rhash)