Add AquaBot title

and some other minor changes

cogs/welcome.py

@@ -9,28 +9,27 @@ import discord
 from discord.ext import commands
 
 # COG INIT
-class WelcomeCog(commands.Cog):
+class Welcome(commands.Cog):
     def __init__(self, bot):
         self.bot = bot
 
 # COG BODY
     @commands.Cog.listener()
     async def on_member_join(self, member):
-
+        """
+        Greets new users joining your server
+        """
         channel = member.guild.system_channel
         text = f"Welcome {member.mention} to our useless Discord!"
         if channel is not None:
             await channel.send(text)
 
 
-    @commands.command(
-            name="hello",
-            description="Hello!"
-            )
+    @commands.command(name="hello")
     async def hello(self, ctx):
 
         await ctx.send(f"Hello {ctx.author.mention}!")
 
 # COG ENDING
 def setup(bot):
-    bot.add_cog(WelcomeCog(bot))
+    bot.add_cog(Welcome(bot))