Examine source code of Stampcord

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "author": "Dixon T E",
  "default_locale": "en",
  "version": "1.0.2",
  "homepage_url": "https://github.com/dixonte",
  "icons": {
    "16": "icons/clock16.png",
    "24": "icons/clock24.png",
    "32": "icons/clock32.png",
    "48": "icons/clock48.png",
    "128": "icons/clock128.png"
  },
  "permissions": [
    "activeTab",
    "contextMenus",
    "storage"
  ],
  "browser_action": {
    "default_title": "__MSG_extensionName__",
    "default_popup": "popup/ui.html",
    "browser_style": true
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "stampcord@dixonte.github.io"
    }
  }
}