added import mimetypes
added import mimetypes

pratikmallya/pyrax,rackerlabs/heat-pyrax,emonty/pyos,ddaeschler/pyrax,vikomall/pyrax,roelvv/pyrax,sivel/pyrax,mandx/pyrax,naemono/pyrax,EdLeafe/pyrax,opsdisk/pyrax,briancurtin/pyrax,rackspace/pyrax,0dataloss/pyrax