docs: update README.md

Author: kevinhermawan

README.md

@@ -1,16 +1,14 @@
-# Canvas
-
-A DALL·E playground for the Mac.
-
 <div>
   <div align="center">
+    <img alt="app icon" src="./Canvas/Resources/Assets.xcassets/AppIcon.appiconset/AppIcon_256x256.png" width="128px" height="128px">
+    <h1>Canvas - DALL·E Playground for the Mac</h1>
     <picture>
       <source media="(prefers-color-scheme: dark)" srcset="./assets/banner-night.jpg">
       <img alt="banner" src="./assets/banner.jpg">
     </picture>
-  </div>
-  <div align="right">
-    <p><em>Illustration of kids drawing in the Borobudur Temple, generated by DALL·E 3.</em></p>
+    <div align="right">
+      <p><em>Illustration of kids drawing in the Borobudur Temple, generated by DALL·E 3.</em></p>
+    </div>
   </div>
 <div>
 
@@ -35,7 +33,7 @@ You can download the latest version of Canvas from the [releases page](https://g
 
 And more...
 
-## Screenshots
+## Screenshot
 
 <div align="center">
   <picture>
@@ -55,3 +53,7 @@ And more...
 - [Sparkle by @sparkle-project](https://github.com/sparkle-project/Sparkle)
 - [ViewCondition by @kevinhermawan](https://github.com/kevinhermawan/ViewCondition)
 - [ViewState by @kevinhermawan](https://github.com/kevinhermawan/ViewState)
+
+## License
+
+This repository is available under the [Apache License 2.0](./LICENSE), with a few additional restrictions.