Fix icon and demo app

Makefile

@@ -0,0 +1,3 @@
+trunk:
+	pod trunk push --allow-warnings PixelEngine.podspec
+	pod trunk push --allow-warnings PixelEditor.podspec

Sources/PixelEditor/Components/Controls/EditMenuControlView.swift

@@ -91,7 +91,7 @@ open class EditMenuControl : EditMenuControlBase {
   }()
 
   public lazy var vignetteButton: ButtonView = {
-    let button = ButtonView(name: L10n.editVignette, image: UIImage(named: "adjustment", in: bundle, compatibleWith: nil)!)
+    let button = ButtonView(name: L10n.editVignette, image: UIImage(named: "vignette", in: bundle, compatibleWith: nil)!)
     button.addTarget(self, action: #selector(vignette), for: .touchUpInside)
     return button
   }()

Sources/PixelEditor/Media.xcassets/vignette.imageset/Contents.json

@@ -0,0 +1,15 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "filename" : "vignette.pdf"
+    }
+  ],
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  },
+  "properties" : {
+    "template-rendering-intent" : "template"
+  }
+}