Examine source code of The Copy Me

{
  "manifest_version": 2,
  "name": "The Copy Me",
  "version": "1.0",
  "permissions": [
    "contextMenus",
    "notifications",
    "tabs",
    "storage",
    "https://api.thecopy.me/*",
    "https://thecopy.me/*"
  ],
  "description": "This is TheCopyMe official firefox extension.",
  "icons": {
    "16": "icon/icon16.png",
    "48": "icon/icon48.png",
    "128": "icon/icon128.png"
  },
  "background": {
    "scripts": [
      "script.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon/icon16.png",
      "48": "icon/icon48.png",
      "128": "icon/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.thecopy.me/*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ]
}