Examine source code of Who to NOT follow

{
  "manifest_version": 2,
  "name": "Who to NOT follow",
  "version": "1.0.1",
  "description": "Removes the follow suggestions from Twitter.",
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.twitter.com/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ]
}