boobs plugin with source

plugins/boobs.lua

@@ -51,6 +51,7 @@ local function run(msg, matches)
   if url ~= nil then
     local receiver = get_receiver(msg)
     send_photo_from_url(receiver, url)
+  return "Source: "..url
   else
     return 'Keine Boobs/Butts gefunden.' 
   end