Harmonize / across all name-related commands

Docker-DCO-1.1-Signed-off-by: Djibril Koné <kone.djibril@gmail.com> (github: enokd)

Harmonize / across all name-related commands

Docker-DCO-1.1-Signed-off-by: Djibril Koné <kone.djibril@gmail.com> (github: enokd)

Harmonize / across all name-related commands:Return an error when repeated /

Docker-DCO-1.1-Signed-off-by: Djibril Koné <kone.djibril@gmail.com> (github: enokd)
I'm not looking forward to documenting cli arguments that may or may not show depending on what plugins / drviers you choose

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)
Harmonize / across all name-related commands/Validate images names

Docker-DCO-1.1-Signed-off-by: Djibril Koné <kone.djibril@gmail.com> (github: enokd)
Merge pull request #4751 from enokd/master

Fixes #3369 Repeated slash-'/' characters; harmonize across all name-related commands
Merge pull request #4786 from SvenDowideit/run--lxc-conf-is-lxc-driver-only-atm

add a note that --lxc-conf is lxc-driver only.
Add Chef usage documentation

Docker-DCO-1.1-Signed-off-by: Brian Flad <bflad417@gmail.com> (github: bflad)
Fix typo in Using Chef documentation description

Docker-DCO-1.1-Signed-off-by: Brian Flad <bflad417@gmail.com> (github: bflad)
Merge pull request #4839 from bflad/chef-docker-docs

Add Chef usage documentation
Reminder for OSX users not to use SUDO

Useful for those who haven't made it to the examples page yet. https://github.com/chadoh/docker/commit/dad4a998dc716e506c874ce0e792989b9df28748

Docker-DCO-1.1-Signed-off-by: No Ducks <onemannoducks@gmail.com> (github: noducks)
Merge pull request #4814 from noducks/master

Reminder for OSX users not to use SUDO
Force flag to prevent file already exists error.

Docker-DCO-1.1-Signed-off-by: No Ducks <onemannoducks@gmail.com> (github: noducks)
Merge pull request #4845 from noducks/link_fix

Force flag to prevent file already exists error.