finished the README
finished the README

CasperSleep/spree_wombat,surfdome/spree_wombat,spree/spree_wombat,ledbury/spree_wombat,spartansystems/spree_wombat,Pixelbash/spree_zapier,petlove/spree_wombat,DynamoMTL/spree_wombat,3drobotics/spree_wombat