Examine source code of Hello world

By: Fry

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manifest.json

{
  "name": "__MSG_ExtensionName__",
  "version": "1.0.0.8",
  "default_locale": "en",
  "description": "__MSG_ExtensionDescription__",
  "background": {
    "page": "/background/main.html",
    "persistent": true
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{d00a9edf-5a09-4e02-82db-5100550d3d02}"
    }
  }
}

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