Examine source code of Remove reddit app promos

{
  "manifest_version": 2,
  "name": "Remove reddit app promos",
  "version": "1.0.2",
  "description": "A small Firefox extension which removes the banners and promos trying to get you to install the Reddit app, these banners and promos normally appear when browsing Reddit on a mobile device.",
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png",
    "128": "icons/128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*"
      ],
      "js": [
        "js/main.js"
      ],
      "css": [
        "css/main.css"
      ]
    }
  ]
}