changes to add auth url

this will make it work with openstack swift
changed readme to reflect auth url changes
added ping repetitions -r

-c count was already used so -r for repetitions instead
added delete object to the test set

added delete to the test set
cut and paste typo fixed for cfauthurl
changes for rackspace cloudfiles to openstack swift
missing spaces
rackepace -> rackspace or openstack swift in readme
added ref to openstack swift
clean up in line with commit
Merge pull request #1 from sohonet/master

openstack swift support, repetitions and delete test