Examine source code of Easy Fill

{
  "manifest_version": 2,
  "name": "Easy Fill",
  "version": "1.1.2resigned1",
  "description": "A mozilla add-ons to keep all your all profile links just a click away.",
  "browser_action": {
    "default_icon": "icons/32.png",
    "default_popup": "index.html",
    "default_title": "easyFill"
  },
  "background": {
    "scripts": [
      "assets/js/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "assets/js/jquery.js",
        "assets/js/content.js"
      ]
    }
  ],
  "permissions": [
    "contextMenus"
  ],
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "64": "icons/64.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{97015947-ade8-47cf-a3e7-232e53706c95}"
    }
  }
}