Examine source code of Autopin

{
  "author": "nw520",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "default_locale": "en",
  "description": "__MSG_extension_description__",
  "homepage_url": "https://github.com/naseweis520/Autopin",
  "icons": {
    "16": "data/icons/favicon-16.png",
    "24": "data/icons/favicon-24.png",
    "32": "data/icons/favicon-32.png",
    "48": "data/icons/favicon-48.png",
    "256": "data/icons/favicon-256.png"
  },
  "manifest_version": 2,
  "name": "__MSG_extension_name__",
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "version": "2.3resigned1",
  "browser_specific_settings": {
    "gecko": {
      "id": "{bbb30aa7-bb1f-4ed9-a76f-48c77b5ca4c4}"
    }
  }
}