Examine source code of Telegrama

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "version": "0.2.4resigned1",
  "description": "__MSG_extensionDescription__",
  "author": "Daniel Doblado",
  "homepage_url": "https://github.com/dobladov/Telegrama",
  "browser_action": {
    "browser_style": true,
    "default_icon": {
      "16": "icons/icon16.png",
      "24": "icons/icon24.png",
      "48": "icons/icon48.png"
    },
    "default_title": "__MSG_extensionAction__"
  },
  "icons": {
    "16": "icons/icon16.png",
    "24": "icons/icon24.png",
    "48": "icons/icon48.png"
  },
  "background": {
    "scripts": [
      "telegrama.js"
    ]
  },
  "permissions": [
    "tabs",
    "contextMenus"
  ],
  "default_locale": "en",
  "commands": {
    "share": {
      "suggested_key": {
        "default": "Ctrl+Shift+B"
      },
      "description": "__MSG_extensionAction__"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f6d61047-fa20-47d7-8e4a-238693d14c4e}"
    }
  }
}