Update README.md

Author: oraclejedi

README.md

@@ -24,3 +24,9 @@ The shell scripts in this repository relies upon the purevol executable being in
 The Python code in this repository relies on [pypureclient Python library.](https://pypi.org/project/py-pure-client)\
 Python code that interacts with Oracle also requires the [oracledb Python library.](https://pypi.org/project/oracledb)
 
+# Sub-repositories
+This repository contains several sub-directories:\
+* bash - simple Linux bash scripts to clone an Oracle database on Pure Flash Array.\
+* fa_pg_snap - Python script to snapshot and optionally clone a Pure Flash Array protection group.  (Not database aware).\
+* fa_pg_ora_snap - Python script to snapshot and optionally clone an Oracle database using Pure Flash Array protection groups.
+