Google script to push in spreadsheet values coming from an HTTPS get request.
Code is a string you'll set in file to reject unauthorized access to your spreasheet Columns for values will be added on the fly depending on the key names you use (in this example valueX and valueY)
from Akshaya Niraula work @ http://www.embedded-lab.com/. See http://embedded-lab.com/blog/post-data-google-sheets-using-esp8266/