Examine source code of XRPTipBot Extension

{
  "version": "0.0.9resigned1",
  "manifest_version": 2,
  "name": "XRPTipBot Extension",
  "description": "Add a button to social media site(s) for a simplified tipping experience.",
  "author": "xelleo",
  "homepage_url": "https://twitter.com/xelleofreya",
  "applications": {
    "gecko": {
      "id": "xelleofreya@gmail.com",
      "strict_min_version": "43.0"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'self';img-src 'self';style-src 'unsafe-inline';",
  "content_scripts": [
    {
      "js": [
        "js/jquery-3.3.1.js",
        "js/background.js"
      ],
      "css": [
        "css/style.css"
      ],
      "matches": [
        "*://*.twitter.com/*"
      ],
      "run_at": "document_start"
    }
  ],
  "permissions": [
    "<all_urls>"
  ],
  "browser_action": {
    "browser_style": false,
    "default_icon": {
      "48": "icons/48.png"
    },
    "default_title": "XRPTipBot Extension",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icons/48.png",
    "128": "icons/128.png",
    "192": "icons/192.png"
  }
}