Examine source code of Outline me

{
  "manifest_version": 2,
  "name": "Outline me",
  "version": "1.1",
  "description": "Quickly get an article in outline.com",
  "permissions": [
    "activeTab"
  ],
  "browser_action": {
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    },
    "default_title": "Outline me"
  },
  "commands": {
    "run_outline_me": {
      "suggested_key": {
        "default": "Shift+Alt+O"
      },
      "description": "Run Outline me on current page"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}