Add ‘Carina Nebula’ as test image

Downloaded from http://hubblesite.org/newscenter/archive/releases/2007/16/image/a/. Released into the public domain by NASA. Closes #11.
zoomhub · Mar 17, 2015 · 331d6da · 331d6da
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diff --git a/README.md b/README.md
@@ -21,6 +21,14 @@ Node.js tool for converting images to Deep Zoom images (DZI).
 See [`test/index._coffee`][sample].
 
 
+### Acknowledgements
+
+We use Hubble’s image of [*Carina Nebula*](./test/images/carina-nebula.jpg) as
+a test image. It was downloaded from [NASA][nasa-carina-nebula] who released it
+into the public domain.
+
+
 [Homebrew]: http://brew.sh/
 [ImageMagick]: http://www.imagemagick.org/
 [sample]: test/index._coffee
+[nasa-carina-nebula]: http://hubblesite.org/newscenter/archive/releases/2007/16/image/a/warn/
diff --git a/test/images/carina-nebula-6000x2906.jpg b/test/images/carina-nebula-6000x2906.jpg
diff --git a/test/index._coffee b/test/index._coffee
@@ -38,8 +38,8 @@ for index in [maxLevel..0]
 
 # Create pyramid
 ID = Math.floor Math.random() * 1000
-SOURCE = path.join __dirname, '..', 'images', '1.jpg'
-DESTINATION = path.join __dirname, '..', 'images', "#{ID}.dzi"
+SOURCE = path.join __dirname, 'images', 'carina-nebula-6000x2906.jpg'
+DESTINATION = path.join __dirname, 'images', "#{ID}.dzi"
 
 
 DEFAULT_TILE_SIZE = 254