Hotfix for purge

misaligned indent, fixes issue #6

app/dragon-bot.py

@@ -169,7 +169,7 @@ async def on_message(message):
             except ValueError:
                 # If they dont enter a number, show them an error and return out of the function
                 await client.send_message(message.channel, "You need to give me a number, you entered {}".format(message.content.split()[1]))
-            return
+                return
         await client.purge_from(message.channel, limit=num, check=is_me)
         # await client.send_message(message.channel, 'Deleted {} message(s)'.format(len(deleted)))