Add license badge and marketplace banner colour

README.md

@@ -1,5 +1,7 @@
 # Kanbn Extension for Visual Studio Code
 
+[![MIT License](https://img.shields.io/github/license/basementuniverse/vscode-kanbn)](https://opensource.org/licenses/MIT)
+
 This extension adds a [Kanbn](https://www.npmjs.com/package/@basementuniverse/kanbn)-powered kanban board to Visual Studio Code.
 
 ![Kanbn](docs/preview.gif "Kanbn")

package.json

@@ -3,6 +3,10 @@
   "displayName": "Kanbn Extension for Visual Studio Code",
   "description": "An extension for Visual Studio Code that allows you to manage tasks on a kanban board.",
   "icon": "resources/kanbn.png",
+  "galleryBanner": {
+    "color": "#72abdd",
+    "theme": "dark"
+  },
   "version": "0.2.0",
   "engines": {
     "vscode": "^1.23.0"