Examine source code of Smileify

{
  "description": "Redirects you to Amazon Smile.",
  "manifest_version": 2,
  "name": "Smileify",
  "author": "William Barkoff, Whiskey Bravo Inc.",
  "version": "1.0.0",
  "homepage_url": "https://github.com/whiskeybrav/smileify",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.amazon.com/*"
      ],
      "js": [
        "smileify.js"
      ],
      "css": [
        "smileify.css"
      ]
    }
  ]
}