Advancement of FreeFlow's version support and controller integration

by Thomas Wynn for Flowgrammable

In order for FreeFlow to offer the same support as the onf2013 submission, OpenFlow versions 1.0, 1.1, 1.2, 1.3.0, and 1.3.1 must all be included. A state machine must also be present to handle the establishment of a connection between a switch and controller. Integration with the controller must allow FreeFlow to easily support new OpenFlow versions as they come out.