SNOW-1756807: Add note about GCP regional endpoints (#1234)

README.md

@@ -47,6 +47,10 @@ go get -u github.com/snowflakedb/gosnowflake
 For detailed documentation and basic usage examples, please see the documentation at
 [godoc.org](https://godoc.org/github.com/snowflakedb/gosnowflake/).
 
+## Note
+
+This driver currently does not support GCP regional endpoints. Please ensure that any workloads using through this driver do not require support for regional endpoints on GCP. If you have questions about this, please contact Snowflake Support.
+
 # Sample Programs
 
 Snowflake provides a set of sample programs to test with. Set the environment variable ``$GOPATH`` to the top directory of your workspace, e.g., ``~/go`` and make certain to