'Show me more' feature

Added the possibility to ask for a picture with 'show me more ...'. Works the same as 'show me a ...' and 'show me an ...'.

launch.py

@@ -87,17 +87,17 @@ async def on_message(message):
         return
     lower = message.content.lower()
     if lower == "show me an help" or lower == "show me a help":
-        mess = "Usage : ``show me a xxxx`` or ``show me an xxxx``\nCurrently, I can show :```"
+        mess = "Usage : ``show me a xxxx`` or ``show me an xxxx`` or ``show me more xxxx``\nCurrently, I can show :```"
         for entry in subreddits.values():
             mess += entry.name + " with a picture from r/" + entry.subName + "\n"
         mess += "```"
         await message.channel.send(mess)
-    if "show me a" in lower:
-        name = re.search(r"show me an? ([\S]+)", lower)
+    if ("show me a" in lower) or ("show me more" in lower):
+        name = re.search(r"show me (an?|more) ([\S]+)", lower)
         if name == None:
             return
         else:
-            name = name.group(1)
+            name = name.group(2)
 
         if name in subreddits.keys():
             print('asking for the following entry: ' + name)