sheets-script-update-data-btn

//These two functions create a new menu item titled "Update data" that
//when clicked will run the rest of the code we're writing here
function onOpen() {
  var ui = SpreadsheetApp.getUi();
  ui.createMenu('Update data')
      .addItem('Update data', 'updateDataMenu')
      .addToUi();
}

function updateDataMenu() {
  gaDateFetch();
}