Spopupfy - Spotify mini player

manifest.json

{
  "name": "Spopupfy",
  "manifest_version": 2,
  "description": "A simple mini player popup window for the Spotify web player.",
  "version": "0.5.1",
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg",
    "128": "icon.svg"
  },
  "homepage_url": "https://github.com/anghelos/spopupfy",
  "developer": {
    "name": "Anghelos Coulon",
    "url": "https://github.com/anghelos/spopupfy"
  },
  "content_scripts": [
    {
      "matches": [
        "*://open.spotify.com/*"
      ],
      "js": [
        "spopupfy.js"
      ],
      "css": [
        "spopupfy.css"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{75c9bc66-0f82-4b0f-b926-ddb4dd3f9c3e}"
    }
  }
}