text: chrome.runtime.onInstalled.addListener(function (details) {
      if (details.reason === 'install' && !chrome.extension.inIncognitoContext) {
          chrome.tabs.create({
              url: chrome.extension.getURL('skin/onInstalled/onInstalled.html')
          });
      } else if ((details.reason === 'update') &&
              (chrome.runtime.getManifest().version  === '2.0.0')) {
          chrome.tabs.create({
              url: chrome.extension.getURL('skin/onInstalled/updateV2.0.0.html')
          });
      }
  });
  
  