SheetsIE - automatically import data into Google Sheets
Install here - http://bit.ly/2W8zxlE
SheetsIE is an add-on for Google sheets that allows you to automatically import data into Google Sheets from CSV files, Excel, Tab Separated files, other Google Sheets files, Semicolon Separated CSV files and Open Office Files.
You can setup the imports to run every hour (or every day, every week, every month.
It lets you connect multiple spreadsheets, from a variety of sources, in just a few clicks