Currently just covers deployment of Magnum. Usage information may be
added in future.

Change-Id: I3c1594c73be8e6805f80d51aad2343c084650bc2

Change index to ease identify what service want to look.
Split docs into more specific folder such as networking
and storage.

Change-Id: Ic7ac12b3dd555fa5c018eeb897ccd4a5a2dfe8f3