Examine source code of BIG MAP for Zillow

{
  "description": "Make zillow more usable with a BIG MAP! Hides the side bar and top bar.",
  "manifest_version": 2,
  "name": "BIG MAP for Zillow",
  "version": "1.1",
  "homepage_url": "https://github.com/mfowlerfinn/big-zillow-map",
  "icons": {
    "48": "icons/border-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.zillow.com/*"
      ],
      "js": [
        "fullScreen.js"
      ]
    }
  ]
}