done more commenting

chatbot.py

@@ -6,7 +6,7 @@ client = discord.Client()
 token = 'Nzc2ODIzNzU0MDA0NDk2NDQ1.X66ffw.XOxA0IHsRdEBjkyvThwCo-DTCCM'
 
 
-class Flag:
+class Flag:         # copied the concept from 'Recipe chatbot' project
     counter = 0
 
 
@@ -45,7 +45,7 @@ async def on_message(message):
 
     response = message.channel.send  # required to invoke response from bot
 
-    if message.author == client.user:
+    if message.author == client.user:  # copied from discord.py documentation
         return
 
     if messages in greets:         # initial greetings