Examine source code of Nonogram Solver

{
  "manifest_version": 2,
  "name": "Nonogram Solver",
  "version": "1.0",
  "description": "Automatically solves nonograms on the site nonograms.org",
  "icons": {
    "48": "icons/smiley-48.png"
  },
  "permissions": [
    "tabs"
  ],
  "browser_action": {
    "default_icon": "icons/smiley-48.png",
    "default_title": "Nonogram solver",
    "default_popup": "popup/menu.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.nonograms.org/*"
      ],
      "js": [
        "content/content.js",
        "content/solver.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "content/background.js",
      "content/solver.js"
    ],
    "persistent": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{fbf2f7f4-1051-4a62-a3a8-e1b2629525d2}"
    }
  }
}