Examine source code of Github1s

{
  "manifest_version": 2,
  "name": "Github1s",
  "version": "1.0",
  "author": "Mohammed CHERIFI",
  "description": "Simplest way to browse a github repository source code, adds github1s.com button of in Github repository navigation",
  "icons": {
    "48": "icons/logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "hello@push.ma"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.github.com/*"
      ],
      "js": [
        "init.js"
      ]
    }
  ]
}