Remove Ken from docs maintainers (he's busy on other things)

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
Remove myself as sole maintainer of api reference docs.

Please still ping me before changing APIs :)

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
docs: harmonize intro paragraph with website

Docker-DCO-1.1-Signed-off-by: Solomon Hykes <solomon@docker.com> (github: shykes)
Fix handling of shared roots

If rootIsShared() is detected we apply the shell stuff to early, before
the real command and arguments are added to the parameters. This
means they get passed on to unshare rather than docker-init, breaking
docker on e.g. fedora like:

goroutine 1 [running]:
runtime.panic(0x678340, 0x9b3fd7)
	/usr/lib64/golang/src/pkg/runtime/panic.c:266 +0xb6
github.com/dotcloud/docker/execdriver/lxc.func·001(0xc21000a1b0, 0xc21001eab0, 0x7fff24715faf)
	/home/alex/vcs/go/src/github.com/dotcloud/docker/execdriver/lxc/driver.go:41 +0x525
github.com/dotcloud/docker/sysinit.executeProgram(0xc21000a1b0, 0xc21000a1b0, 0xa)
	/home/alex/vcs/go/src/github.com/dotcloud/docker/sysinit/sysinit.go:34 +0xca
github.com/dotcloud/docker/sysinit.SysInit()
	/home/alex/vcs/go/src/github.com/dotcloud/docker/sysinit/sysinit.go:88 +0x791
main.main()
	/home/alex/vcs/go/src/github.com/dotcloud/docker/dockerinit/dockerinit.go:14 +0x1a

The fix is to construct the full params array before escaping it.

Docker-DCO-1.1-Signed-off-by: Alexander Larsson <alexl@redhat.com> (github: alexlarsson)
Merge pull request #3687 from shykes/docs-intro

docs: harmonize intro paragraph with website
Merge pull request #3698 from alexlarsson/fix-shared-root

Fix handling of shared roots
Merge pull request #3690 from shykes/cleanup-maintainers

Cleanup maintainers
Merge branch 'master' of https://github.com/dotcloud/docker