Examine source code of BlockComments

{
  "manifest_version": 2,
  "name": "BlockComments",
  "version": "1.6",
  "homepage_url": "https://github.com/danielbWork/BlockComments",
  "description": "Removes youtube comments cause they suck",
  "icons": {
    "48": "icons/noYoutubeComments.jpg"
  },
  "permissions": [
    "*://*.youtube.com/*",
    "webNavigation",
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/noYoutubeComments.jpg",
    "default_title": "Block Comments",
    "default_popup": "src/popup/popup.html",
    "default_area": "navbar"
  },
  "background": {
    "scripts": [
      "src/background/background.js"
    ]
  },
  "content_scripts": [
    {
      "all_frames": true,
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "src/content/blockComments.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{0ff8941d-4ab8-467e-843b-edfa575d0933}"
    }
  }
}