Examine source code of EpicApks

{
  "browser_action": {
    "default_icon": "img/icon_128.png",
    "default_popup": "html/popup.html",
    "default_title": "EpicApks"
  },
  "description": "Download the latest versions of Android Apks and Mod Apks with updated features and enjoy the unlimited fun.",
  "icons": {
    "16": "img/icon_16.png",
    "128": "img/icon_128.png"
  },
  "manifest_version": 2,
  "name": "EpicApks",
  "version": "1.1"
}