Update README.md

README.md

@@ -12,3 +12,13 @@ Log into the Google Developers Console with the Google account whose spreadsheet
 Go to the **Credentials** for your project and create **New credentials > OAuth client ID >** of type **Other**. In the list of your OAuth 2.0 client IDs click Download JSON for the Client ID you just created. Save the file as `client_secret.json` in your home directory (user directory).
 
 Upon initial exectuion, follow the prompted terminal instructions.
+
+
+Then run this in a Python script or terminal:
+
+```
+from py_googlesheets_grading import Grader
+
+Grader().grade_students()
+
+```