Update README.md

README.md

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-# Google Spreadsheet Script
+## Collect user data in google sheets (instead of DB)
+
+A script (more like a function that can be used in any node.js env) to store data in google spreadsheets. 
+
+Can be used as a quick hack where we don't need DB but want to collect some user data. (or migrate existing data to sheets)
+
+This example is hard coded. Modify the script and data/input as per your use case.
+
+
+#### How to run?
+
+```
+1. Create a .env file 
+2. Store your sheet api_key and email_id inside the .env file
+3. Run spreadsheet.js using node
+
+// the concept can be extended to work on cliend-side
+
+```
+
+
 
-A script to store data in google spreadsheets. Modify as per use case.