fully fleshed out README
fully fleshed out README

philoserf/knife-rackspace,vhl/knife-rackspace,chef/knife-rackspace,srirajan/knife-rackspace,chef/knife-rackspace,decklin/knife-rackspace,tdooner/knife-rackspace,stephenlauck/knife-rackspace,martinb3/knife-rackspace,rackspace/knife-rackspace