Include links to developer workflow documentation
Include links to developer workflow documentation

Newcomers aren't always sure how to get started with our tools or
workflow. Lucky for them, we have documented these things. Unlucky for
them, they have no idea the docs exist.

Give them some links.

Change-Id: I6fce6fbccb8a9fe16b48845790b4cac05317ebac

redhat-openstack/python-openstackclient,redhat-openstack/python-openstackclient,openstack/python-openstackclient,dtroyer/python-openstackclient,BjoernT/python-openstackclient,openstack/python-openstackclient,dtroyer/python-openstackclient,BjoernT/python-openstackclient