Update README.md

README.md

@@ -11,3 +11,22 @@ Step2. Execute setup.py install to install custom helpers. (> python3.8)
 ```
 python3 setup.py install
 ```
+
+Step3. Update related s3 path
+Because this example emulate data which stored on AWS S3, need to update related bucket and prefix object in pyspark_main.py
+
+Step4. Generate corresponding great_expectation suite json
+```
+python3 generate_expectation_suite.py --environment develop
+```
+
+Step5. Execute Spark main script
+```
+python3 pyspark_main.py --environment develop
+```
+
+## What is the next?
+Becuase the repo just is a example, if you need to fork or refercence this module. Please refer to related document to modify.
+
+## Reference
+* [greate_expectations document](https://docs.greatexpectations.io/docs/)