Examine source code of Redirector

{
  "manifest_version": 2,
  "name": "Redirector",
  "version": "0.7.0",
  "description": "Redirects URLs accessed depending on a given regex",
  "author": "TheNamlessGuy",
  "homepage_url": "https://github.com/TheNamlessGuy/browser-redirector",
  "developer": {
    "name": "TheNamlessGuy",
    "url": "https://github.com/TheNamlessGuy/browser-redirector"
  },
  "icons": {
    "16": "res/icons/redirector/16.png",
    "19": "res/icons/redirector/19.png",
    "32": "res/icons/redirector/32.png",
    "38": "res/icons/redirector/38.png",
    "48": "res/icons/redirector/48.png"
  },
  "permissions": [
    "<all_urls>",
    "activeTab",
    "bookmarks",
    "storage",
    "unlimitedStorage"
  ],
  "page_action": {
    "browser_style": true,
    "default_icon": {
      "16": "res/icons/processing/16.gif",
      "19": "res/icons/processing/19.gif",
      "32": "res/icons/processing/32.gif",
      "38": "res/icons/processing/38.gif",
      "48": "res/icons/processing/48.gif"
    },
    "default_title": "Redirector processing"
  },
  "browser_action": {
    "default_icon": {
      "16": "res/icons/processing/16.gif",
      "19": "res/icons/processing/19.gif",
      "32": "res/icons/processing/32.gif",
      "38": "res/icons/processing/38.gif",
      "48": "res/icons/processing/48.gif"
    },
    "default_title": "Redirector processing"
  },
  "background": {
    "scripts": [
      "src/communication.js",
      "src/redirects.js",
      "src/options/bookmark.js",
      "src/options/opts.js",
      "src/background.js"
    ]
  },
  "options_ui": {
    "page": "src/options/page/index.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "redirector@TheNamlessGuy.github.io"
    }
  }
}