Examine source code of citation tools

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  "version": "1.0",
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      "matches": [
        "https://scholar.google.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "icons/icon48.png",
    "default_title": "Scholar Enhancer"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{151c3b8c-0e31-4e6c-8004-2d9f62c99f42}"
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