Examine source code of Supp

{
  "manifest_version": 2,
  "name": "Supp",
  "version": "1.0",
  "description": "Chrome Extension for Supp",
  "content_scripts": [
    {
      "matches": [
        "https://supp-app.herokuapp.com/*"
      ],
      "js": [
        "popup.js"
      ],
      "all_frames": true
    }
  ],
  "browser_action": {
    "default_icon": "logo_icon.png",
    "default_popup": "popup.html",
    "default_title": "Supp?"
  }
}