Examine source code of bmarks

{
  "manifest_version" : 2 ,
  "name" : "bmarks",
  "author": "Felipe Cortez",
  "version" : "1.3resigned1",
  "description" : "Add bookmarks and tab collections to bmarks.net",
  "homepage_url" : "https://bmarks.net",
  "permissions" : [
    "tabs" ,
    "activeTab" ,
    "*://bmarks.net/*" 
  ],
  "content_scripts" : [
    {
      "matches" : [
        "*://bmarks.net/*" 
      ],
      "js" : [
        "/content-script.js" 
      ]
    }
  ],
  "icons" : {
    "24" : "icons/icon-24.png",
    "32" : "icons/icon-32.png",
    "48" : "icons/icon-48.png",
    "96" : "icons/icon-96.png"
  },
  "background" : {
    "scripts" : [
      "background-script.js" 
    ]
  },
  "browser_action" : {
    "default_icon" : "icons/icon-24.png",
    "default_title" : "bmarks",
    "default_popup" : "popup/actions.html"
  },
  "commands" : {
    "bookmark-current": {
      "suggested_key": {
        "default": "Alt+Shift+T"
      },
      "description" : "This tab"
    },
    "bookmark-all": {
      "suggested_key": {
        "default": "Alt+Shift+W"
      },
      "description" : "Window tabs"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c186cf87-def1-4b50-8c26-f132e4e9dff0}"
    }
  }
}