Note '-V 2' is necessary for auth 2.0
Note '-V 2' is necessary for auth 2.0

Here are some questions in Launchpad, just because they miss '-V 2' for
auth 2.0.
https://answers.launchpad.net/swift/+question/231938
https://answers.launchpad.net/swift/+question/231279
So I add somethins for noteing people add the '-V 2'

Change-Id: I2e0fef969be4eca316975de03fdbc516a1069acf

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