🔧 Add branding to action

Author: Sven65

action.yml

@@ -1,6 +1,9 @@
 name: 'Ghost Post'
 description: 'GitHub action for publishing to a Ghost instance'
 author: 'Discord Dungeons'
+branding:
+  icon: 'book-open'
+  color: 'green'
 inputs:
   post_title:
     required: true
@@ -20,4 +23,4 @@ inputs:
     description: 'The admin API key of your ghost integration'
 runs:
   using: 'node12'
-  main: 'dist/index.js'
+  main: 'dist/index.js'