Update the man page
Update the man page

- Add -V option
- Use uniform and correct capitalization for OpenStack Swift
- Make the example of output of stat command up-to-date
- Generally prettify the document
- Remove all trailing whitespace

Change-Id: Id3da2035851847c4bff8cec8f927d3654824bf5b

citrix-openstack-build/python-swiftclient,jeseem/python-swiftclient,ironsmile/python-swiftclient,zackmdavis/python-swiftclient,VyacheslavHashov/python-swiftclient,iostackproject/IO-Bandwidth-Differentiation-Client,ironsmile/python-swiftclient,sohonetlabs/python-swiftclient,citrix-openstack-build/python-swiftclient,varunarya10/python-swiftclient,pratikmallya/python-swiftclient,pratikmallya/python-swiftclient,citrix-openstack/build-python-swiftclient,openstack/python-swiftclient,citrix-openstack/build-python-swiftclient,zackmdavis/python-swiftclient,JioCloud/python-swiftclient,sohonetlabs/python-swiftclient,jeseem/python-swiftclient,iostackproject/IO-Bandwidth-Differentiation-Client,krnflake/python-hubicclient,varunarya10/python-swiftclient,citrix-openstack/build-python-swiftclient,JioCloud/python-swiftclient,openstack/python-swiftclient,VyacheslavHashov/python-swiftclient