Add "ONBUILD" highlighting to our vim syntax file

Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Merge pull request #3963 from unclejack/update-contributing

Update issue filing & PR submission instructions
Merge pull request #3974 from creack/3967-add_content_type-fix

Add json content type to /containers/json api endpoint
Added Dockerfile.tmPreferences for hotkey commenting

Docker-DCO-1.1-Signed-off-by: Asbjorn Enge <asbjorn@hanafjedle.net> (github: asbjornenge)
Removed the YAML file since I wasn't using it

Docker-DCO-1.1-Signed-off-by: Asbjorn Enge <asbjorn@hanafjedle.net> (github: asbjornenge)
Added suppport for the ONBUILD instruction

Docker-DCO-1.1-Signed-off-by: Asbjorn Enge <asbjorn@hanafjedle.net> (github: asbjornenge)
Updated readme

Docker-DCO-1.1-Signed-off-by: Asbjorn Enge <asbjorn@hanafjedle.net> (github: asbjornenge)
Improved regex

Docker-DCO-1.1-Signed-off-by: Asbjorn Enge <asbjorn@hanafjedle.net> (github: asbjornenge)
Added support for single quoted strings

Docker-DCO-1.1-Signed-off-by: Asbjorn Enge <asbjorn@hanafjedle.net> (github: asbjornenge)
docker-ci: Add new docker coverage report

Docker-DCO-1.1-Signed-off-by: Daniel Mizyrycki <daniel@docker.com> (github: mzdaniel)
Merge pull request #3913 from mzdaniel/docker-ci-coverage

docker-ci: Add new docker coverage report
pkg: systemd: add initial MAINTAINERS

I volunteered for pkg/systemd MAINTAINER and there were no objections
during the #docker-dev meeting. For context I wrote most of the stuff in
here and wrote the dependent calls in api.go. Plus, I actively test the
code via CoreOS.

Docker-DCO-1.1-Signed-off-by: Brandon Philips <brandon.philips@coreos.com> (github: philips)
Merge pull request #3977 from tianon/vim-onbuild

Add "ONBUILD" highlighting to our vim syntax file
Merge pull request #3966 from asbjornenge/updated_tmlang

Update TextMate & Sublime Text Syntaxt Highlighting with ONBUILD
devmapper: Fix UnmountDevice for non-existing device

Properly error out if passed an id that doesn't exist.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
devmapper: Fix MountDevice for non-existing Device

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Remove linux specific calls

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
Merge pull request #3948 from alexlarsson/devmapper-unmount

Devmapper cleanup and unmount fix
Add Freebsd client support

Docker-DCO-1.1-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
Added Security FAQ security

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