Remove old README
Merge branch 'master' into poxcradle
Add default route for IP router nodes; just add defaultroute: True, or defaultroute: nodename in config file
monkeypatching/bridge code to pox: override key POX classes
Tweak usage line to include .json option
Patching in POX switch and controller callbacks; integrating to fs Node-based objects
Pretty much all glue between fs and POX is in place; still need to do flowlet/packet translation in the switch
Need to translate incoming flowlet in switch
poxbridge: messages flowing bewteen controller<->switch, but port numbers not translated quite right and there's a hang at some point.  getting there.