Examine source code of ScrollTabs

{
  "manifest_version": 2,
  "name": "ScrollTabs",
  "version": "0.1.1",
  "description": "Increases your agility when browsing. ScrollTabs allows you to scroll between your tabs from almost anywhere on the page with 'shift' and mouse wheel.",
  "author": "zaldih",
  "homepage_url": "https://github.com/zaldih/scrolltabs-extension",
  "icons": {
    "48": "icons/logo-squared.png"
  },
  "permissions": [
    "<all_urls>",
    "tabs"
  ],
  "background": {
    "scripts": [
      "services/tabs.service.js",
      "services/extension.service.js",
      "app.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "inserted.js"
      ]
    }
  ],
  "options_ui": {
    "page": "views/instructions.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "views/instructions.html"
  ]
}