adding ovs version detection to fix port numbering bug
rearranged code for elegance
removing debugging messages
conforming to mininet python style
adding example to test functionality of port numbering
explaining test
corrected code
restructured code and added a test for the numberedports.py example
imported warn from mininet.log
fixed issue with AssertTrue and skip first test if using old OVS version
Merge pull request #313 from cdburkard/master

ovs port numbering bug fix