Io graphics set added

js/GraphicSet.js

@@ -42,6 +42,17 @@ let GraphicSet = [
         tilePreview: 46,
         primaryTiles: 3,
         gravity: 2,
+    },
+    {
+        name: 'Io',
+        tileset: 'io.png',
+        tiles: 96,
+        scale: 1,
+        backgroundColor: '#000000',
+        backgroundImage: 'background_jupiter.jpg',
+        tilePreview: 2,
+        primaryTiles: 6,
+        gravity: 0.5,
     }
 ];