add single scale pdf instead of pngs

Shared/Assets.xcassets/default_image/average.imageset/Contents.json

@@ -1,19 +1,8 @@
 {
   "images" : [
     {
-      "filename" : "average.png",
-      "idiom" : "universal",
-      "scale" : "1x"
-    },
-    {
-      "filename" : "average@2x.png",
-      "idiom" : "universal",
-      "scale" : "2x"
-    },
-    {
-      "filename" : "average@3x.png",
-      "idiom" : "universal",
-      "scale" : "3x"
+      "filename" : "meh-regular.pdf",
+      "idiom" : "universal"
     }
   ],
   "info" : {
@@ -21,6 +10,7 @@
     "version" : 1
   },
   "properties" : {
+    "preserves-vector-representation" : true,
     "template-rendering-intent" : "template"
   }
 }

Shared/Assets.xcassets/default_image/bad.imageset/Contents.json

@@ -1,19 +1,8 @@
 {
   "images" : [
     {
-      "filename" : "bad.png",
-      "idiom" : "universal",
-      "scale" : "1x"
-    },
-    {
-      "filename" : "bad@2x.png",
-      "idiom" : "universal",
-      "scale" : "2x"
-    },
-    {
-      "filename" : "bad@3x.png",
-      "idiom" : "universal",
-      "scale" : "3x"
+      "filename" : "frown-regular.pdf",
+      "idiom" : "universal"
     }
   ],
   "info" : {
@@ -21,6 +10,7 @@
     "version" : 1
   },
   "properties" : {
+    "preserves-vector-representation" : true,
     "template-rendering-intent" : "template"
   }
 }

Shared/Assets.xcassets/default_image/good.imageset/Contents.json

@@ -1,19 +1,8 @@
 {
   "images" : [
     {
-      "filename" : "good.png",
-      "idiom" : "universal",
-      "scale" : "1x"
-    },
-    {
-      "filename" : "good@2x.png",
-      "idiom" : "universal",
-      "scale" : "2x"
-    },
-    {
-      "filename" : "good@3x.png",
-      "idiom" : "universal",
-      "scale" : "3x"
+      "filename" : "grin-regular.pdf",
+      "idiom" : "universal"
     }
   ],
   "info" : {
@@ -21,6 +10,7 @@
     "version" : 1
   },
   "properties" : {
+    "preserves-vector-representation" : true,
     "template-rendering-intent" : "template"
   }
 }

Shared/Assets.xcassets/default_image/great.imageset/Contents.json

@@ -1,19 +1,8 @@
 {
   "images" : [
     {
-      "filename" : "smile-beam-regular.png",
-      "idiom" : "universal",
-      "scale" : "1x"
-    },
-    {
-      "filename" : "smile-beam-regular@2x.png",
-      "idiom" : "universal",
-      "scale" : "2x"
-    },
-    {
-      "filename" : "smile-beam-regular@3x.png",
-      "idiom" : "universal",
-      "scale" : "3x"
+      "filename" : "smile-beam-regular.pdf",
+      "idiom" : "universal"
     }
   ],
   "info" : {
@@ -21,6 +10,7 @@
     "version" : 1
   },
   "properties" : {
+    "preserves-vector-representation" : true,
     "template-rendering-intent" : "template"
   }
 }

Shared/Assets.xcassets/default_image/horrible.imageset/Contents.json

@@ -1,19 +1,8 @@
 {
   "images" : [
     {
-      "filename" : "horrible.png",
-      "idiom" : "universal",
-      "scale" : "1x"
-    },
-    {
-      "filename" : "horrible@2x.png",
-      "idiom" : "universal",
-      "scale" : "2x"
-    },
-    {
-      "filename" : "horrible@3x.png",
-      "idiom" : "universal",
-      "scale" : "3x"
+      "filename" : "sad-tear-regular.pdf",
+      "idiom" : "universal"
     }
   ],
   "info" : {
@@ -21,6 +10,7 @@
     "version" : 1
   },
   "properties" : {
+    "preserves-vector-representation" : true,
     "template-rendering-intent" : "template"
   }
 }

Shared/Assets.xcassets/default_image/missing.imageset/Contents.json

@@ -1,21 +0,0 @@
-{
-  "images" : [
-    {
-      "filename" : "x-solid.png",
-      "idiom" : "universal",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "universal",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "universal",
-      "scale" : "3x"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  }
-}