Examine source code of Github Enhanced Project Board

{
  "manifest_version" : 2 ,
  "name" : "Github Enhanced Project Board",
  "description" : "An enhanced UI for Github project boards",
  "version" : "1.4.2",
  "page_action" : {},
  "content_scripts" : [
    {
      "matches" : [
        "http://*.github.com/*" ,
        "https://*.github.com/*" 
      ],
      "js" : [
        "jquery.min.js" ,
        "github.js" 
      ]
    }
  ],
  "web_accessible_resources" : [
    "images/github.png"
  ],
  "permissions" : [
    "tabs" 
  ],
  "icons" : {
    "32" : "images/github.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "githubboard@bluehousegroup.com",
      "strict_min_version": "42.0"
    }
  }
}