Fix a few typos in the README

Change-Id: If9d2148ab5bf41e997896072d74c3eb5cc178c41
Fixing remaining typo in the README

Change-Id: Ieb587f86f0bf92e0012477e2ec97aec27f320cd1
Set include_service_catalog to False

include_service_catalog is a parameter in swift authtoken configuration.
Set to False improves performances.

Closes-Bug #1257738
Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>

Change-Id: Ie5dd2de45fce79e4da7ccb5b37d7c69ee1cb5198