Updated installation docs for CRUX as a Docker Host.

Docker-DCO-1.1-Signed-off-by: James Mills <prologic@shortcircuit.net.au> (github: therealprologic)
Update using_supervisord.md

changed the version of ubuntu to 13.04. In latest sshd will not work.
docs/reference/builder: fix USER doc

Docker-DCO-1.1-Signed-off-by: Johan Euphrosine <proppy@google.com> (github: proppy)
Merge pull request #6023 from proppy/patch-4

docs/reference/builder: fix USER doc
Merge pull request #6016 from ronsmits/patch-1

Update using_supervisord.md
Merge pull request #6006 from therealprologic/master

Updated installation docs for CRUX as a Docker Host.
Some fixes to the Intro pages

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)
Merge pull request #6001 from jamtur01/introfixes

Some fixes to the Intro pages
Adding User Guide

* Added User Guide sections.
* Moved HTTPS example to articles.
* Replaced Hello World example with User Guide.
* Moved use cases out of examples.

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)
Fixed all the Terms links

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)
Removed old examples and use indexes and updated articles index

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)
Added redirections for use/ and examples/ to articles/

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)
Added back Docker basics article

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)
Removed running daemon mentions

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)
Moved articles to examples

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)
First two sections for review:

* Added Docker.io section
* Added Dockerized section

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)
Added Using Docker section

Docker-DCO-1.1-Signed-off-by: James Turnbull <james@lovedthanlost.net> (github: jamtur01)