Examine source code of Annoyance Blocker

{
  "manifest_version": 2,
  "name": "Annoyance Blocker",
  "version": "0.2",
  "description": "Browse the web without malarkey!",
  "icons": {
    "36": "icons/baseline_close_black_48dp.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.instagram.com/*"
      ],
      "css": [
        "hide_elements.css"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.instagram.com/*"
      ],
      "js": [
        "annoyanceblocker.js"
      ]
    }
  ]
}