Use "None" for db2 connection user and password
Use "None" for db2 connection user and password

Closes #4. Note: requires Python PTFs released in approximately June 2016: https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/IBM%20i%20Technology%20Updates/page/Python%20PTFs
Club-Seiden/-ibmi_netstat_py,ThePrez/-ibmi_netstat_py,ThePrez/python-for-IBM-i-examples,ThePrez/python-for-IBM-i-examples,Club-Seiden/python-for-IBM-i-examples,Club-Seiden/python-for-IBM-i-examples