Enhance README with information about where to get the driver and how to run

the samples.

Author: anthony-tuininga

python/README.md

@@ -1,3 +1,19 @@
-# Python based examples
-This folder stores Python based examples for Oracle Database.
+These are examples for the
+[cx_Oracle driver](https://oracle.github.io/python-cx_Oracle).
+
+Download and install from [PyPI](https://pypi.python.org/pypi/cx_Oracle) or
+issue the command
+
+``python -m pip install cx_Oracle --upgrade``
+
+[Documentation](http://cx-oracle.readthedocs.io/en/5.3/index.html)
+
+[Issues and questions](https://github.com/oracle/python-cx_Oracle/issues)
+
+After installing cx_Oracle, the demos can be run by executing each script file
+with Python. The scripts all assume that the cx_Oracle
+[test suite](https://github.com/oracle/python-cx_Oracle/tree/master/test)
+objects have been installed in your database and that the connect string
+"cx_Oracle/dev@localhost/orcl" is valid. If this is not correct, adjust the
+connect string before running the test.