Added NASA APOD. Added Config Module

cogs/api/nasa.py

@@ -0,0 +1,22 @@
+import discord
+from discord.ext import commands
+from api import nasa
+from util import config
+
+class Nasa(commands.Cog):
+
+    def __init__(self, client):
+        self.client = client
+
+    @commands.command(name="APOD", description="Posts NASA's picture of the day.")
+    @commands.cooldown(1, 30)
+    async def apod(self, ctx):
+        url = nasa.image_of_the_day()
+        embed = discord.Embed(title="Astronomy Picture of the day", color=int(config.settings["color"], 16))
+        embed.set_image(url=url)
+
+        await ctx.send(embed=embed)
+
+
+def setup(client):
+    client.add_cog(Nasa(client))