Currently, there are some description of remove older
backup with using '--remove-older-then' which is not
exist, should use '--remove-older-than' instead.
Change-Id: I172e60151549d4478f951c439e5cf248bee038ca
The README.rst now contains some more details regarding
the architecture, the interactions with other components
and how basically the freezer agent interact with the
scheduler and the API
Change-Id: I4be42cc4e229962a0c2811789c87a7ba8b32e2e5
caihui