Examine source code of rScript

{
  "description": "rScript",
  "manifest_version": 2,
  "name": "rScript",
  "version": "1.7resigned1",
  "homepage_url": "https://github.com/nfpk/rScript",
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "notifications",
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background_scripts/index.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/deny.png",
    "default_title": "rScript",
    "default_popup": "popup/popup_index.html"
  },
  "applications": {
    "gecko": {
      "id": "@nfpk-rScript"
    }
  }
}