Examine source code of Comment Suggestion

{
  "manifest_version": 2,
  "name": "Comment Suggestion",
  "description": "Fast comment for funny image in page",
  "author": "MQuy",
  "version": "1.0.5.7resigned1",
  "applications": {
    "gecko": {
      "id": "sugiacupit@gmail.com"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "exclude_matches": [
        "*://*.slack.com/*",
        "*://trello.com/*"
      ],
      "js": [
        "vendor.js",
        "content/app.js"
      ],
      "css": [
        "content/app.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_page": "options/index.html",
  "permissions": [
    "<all_urls>",
    "storage",
    "tabs",
    "contextMenus"
  ],
  "browser_action": {
    "default_icon": "icons/comment-32.png"
  },
  "icons": {
    "16": "icons/comment-16.png",
    "24": "icons/comment-24.png",
    "32": "icons/comment-32.png",
    "64": "icons/comment-64.png",
    "128": "icons/comment-128.png"
  },
  "web_accessible_resources": [
    "icons/*"
  ]
}