Updated openstack/openstack
Project: openstack/neutron  cf1e0c4e436d6c1f39623c68eebb6da77d1008fd
null
API layer documentation

* Discuss the WSGI layer of Neutron
* Describe the startup code that creates the WSGI application
* Briefly discuss the URL routing and resource creation

Change-Id: Id82a2a5679d7e29c0a19d1a20942a9249946b011