Examine source code of Easy Stack Search

{
  "manifest_version": 2,
  "version": "2.2.0",
  "applications": {
    "gecko": {
      "id": "chrisvin@EasyStackSearch.github"
    }
  },
  "name": "Easy Stack Search",
  "description": "A lightweight extension that makes searching Stack sites like StackOverflow quick & easy.",
  "author": "Chrisvin",
  "homepage_url": "https://github.com/Chrisvin/EasyStackSearchExtension",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "64": "icons/64.png",
    "96": "icons/96.png",
    "128": "icons/128.png"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/16.png",
      "32": "icons/32.png",
      "48": "icons/48.png",
      "64": "icons/64.png",
      "96": "icons/96.png",
      "128": "icons/128.png"
    }
  },
  "omnibox": {
    "keyword": "s"
  },
  "background": {
    "scripts": [
      "background/browserAction.js",
      "background/omnibox.js",
      "background/contextMenus.js"
    ]
  },
  "options_ui": {
    "page": "options/options.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage",
    "contextMenus"
  ]
}