make docker run handle SIGINT/SIGTERM
Sort APIImages by most recent creation date.

Fixes #985.
keep processing signals after the first one
Improve TestKillDifferentUser to prevent timeout on buildbot
minor cleanup for signal handling
add formatting directive to failure to stop container error
Add GitHub usernames to MAINTAINERS
Add initial bash completion script

The script can be used to auto-complete commands, image names and
container ids from within a bash prompt.

This partially resolves #336.
Apply volumes-from before creating volumes

Copies the volumes from the container specified in `Config.VolumesFrom` before
creating volumes from `Config.Volumes`. Skips any preexisting volumes when
processing `Config.Volumes`. Fixes #1351
Skip existing volumes in volumes-from

Removes the error when a container already has a volume that would otherwise
be created by `Config.VolumesFrom`. Allows restarting containers with a
`Config.VolumesFrom` set.
Add description and usage information
gitignore all test files
Missed -entrypoint from 'docker run' options
Clarified bash completion limitations
Still missed -entrypoint from 'docker run'
Fix Graph ByParent() to generate list of child images per parent image.
Add test case for Graph ByParent().
Install websocket library before building docker
docs/postgresql: PostgreSQL service on Docker example
ensure the use oh IDs and add image's name in /events