Adding support for iPad icons. Closes #255

Signal/Images.xcassets/AppIcon.appiconset/Contents.json

@@ -41,6 +41,39 @@
       "idiom" : "iphone",
       "filename" : "Icon-60@3x.png",
       "scale" : "3x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "29x29",
+      "scale" : "1x"
+    },
+    {
+      "size" : "29x29",
+      "idiom" : "ipad",
+      "filename" : "iTunesArtwork@2x@2x.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "40x40",
+      "scale" : "1x"
+    },
+    {
+      "size" : "40x40",
+      "idiom" : "ipad",
+      "filename" : "iTunesArtwork@2x@2x-1.png",
+      "scale" : "2x"
+    },
+    {
+      "idiom" : "ipad",
+      "size" : "76x76",
+      "scale" : "1x"
+    },
+    {
+      "size" : "76x76",
+      "idiom" : "ipad",
+      "filename" : "iTunesArtwork@2x@2x-2.png",
+      "scale" : "2x"
     }
   ],
   "info" : {