Examine source code of No Facebook Feed

{
  "manifest_version": 2,
  "name": "No Facebook Feed",
  "version": "1.0",
  "description": "For all the people who use Facebook but hate the Facebook feed.",
  "icons": {
    "48": "icons/nofeed-48.png",
    "96": "icons/nofeed-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.facebook.com/*"
      ],
      "js": [
        "no_feed.js"
      ]
    }
  ]
}