Update FITS-images.ipynb

added description.

Author: kelle

tutorials/FITS-images/FITS-images.ipynb

@@ -5,7 +5,8 @@
    "date": "January 2014",
    "link_name": "Viewing and manipulating FITS images",
    "name": "",
-   "published": true
+   "published": true,
+   "description" : "Demonstrates use of astropy.utils.data to download data; astropy.io.fits to open the file; matplotlib to view the image with different color scales and stretches and to make histrograms. Also includes method for simple image stacking."
   },
   "signature": "sha256:9e029d61f0feea4f4d19511b44579e113ef088bc23c9fcc0a05ebcd3093a8821"
  },
@@ -444,4 +445,4 @@
    "metadata": {}
   }
  ]
-}
+}