Examine source code of flat search

{
  "author": "alex",
  "name": "flat search",
  "description": "for personal use",
  "version": "0.0.0.25resigned1",
  "manifest_version": 2,
  "minimum_chrome_version": "34",
  "icons": {
    "16": "./images/icon_house_16.png",
    "48": "./images/icon_house_48.png"
  },
  "permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "./js/background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "images/*.png",
    "*.json"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{959c1cee-2fc7-4e85-a53c-be1e4a2e9325}"
    }
  }
}