add logo

Author: mikebarkmin

README.md

@@ -1,5 +1,7 @@
 # Scratch for Java
 
+![](./docs/public/assets/logo.png)
+
 To ease the transition from the block-based programming environment
 [Scratch](scratch.mit.edu) to text-based programming in Java this
 library was created. Therefore, the core elements of Scratch are remodeled.

docs/hyperbook.json

@@ -6,6 +6,12 @@
     "name": "OpenPatch",
     "url": "https://openpatch.org"
   },
+  "logo": "/assets/logo.png",
+  "colors": {
+    "brand": "#4e7896",
+    "brandDark": "#f58219",
+    "brandText": "#f58219"
+  },
   "license": "CC-BY-SA",
   "language": "en"
 }