Updating WORKAROUNDS after rebase.
Merge pull request #312 from mcoms/patch-1

Workarounds: Reunite orphaned Port Forwarding line with its parent paragraph
Teach how to reverse port forwarding.

This instructs users how to reverse "Port Forwarding On Steroids" if
need be without having to consult the VBox documentation.
Merge pull request #371 from nathanleclaire/reverse_port_steroids

Teach how to reverse port forwarding.