add username to hello message

main.py

@@ -17,12 +17,14 @@
 ## Imports
 import discord
 import json
+
+from discord import user
 from lib.keep_alive import keep_alive
 from lib.help import *
 
 ## Vars
 client = discord.Client()
-with open("bot.json", 'r') as f:
+with open("bot.conf", 'r') as f:
     BOTDATA = json.load(f)
 
 ## Run
@@ -40,7 +42,7 @@ async def on_message(message):
         await message.channel.send(help)
 
     if message.content.startswith(BOTDATA['prefix'] + 'hello'):
-        await message.channel.send('Hello!')
+        await message.channel.send("Hello, {}!".format(message.author))
 
 keep_alive()
 client.run(BOTDATA['token'])