Apply @jamtur01's copy edit's to certificates.md

Docker-DCO-1.1-Signed-off-by: Timothy <timothyhobbs@seznam.cz> (github: timthelion)
Remove Old shiftWindow()

closes #7493

Docker-DCO-1.1-Signed-off-by: Christopher Biscardi <biscarch@sketcht.com> (github: ChristopherBiscardi)
Docs: articles/certificates.md rewrite.

This commit contains a re-structured re-write of the original
certificated.md file, containing the amendments proposed with
PR #7120 (commit ID bd28595e310ccfa98) by @timthelion.

Related to: https://github.com/dotcloud/docker/pull/7120

2014-07-30: Update/rebase/squash based on the comments from @jamtur01 and @fredlf.
2014-08-12: Update/rebase/squash based on the comments from @fredlf (of 2014-08-12).

Docker-DCO-1.1-Signed-off-by: O.S. Tezer <ostezer@gmail.com> (github: ostezer)
Fix my email entry so that my current email is first and the old commit email second.

Docker-DCO-1.1-Signed-off-by: Andy Rothfusz <github@developersupport.net> (github: metalivedev)
Added fredlf's suggested changes.

Signed-off-by: Hollie Teal <hollie@docker.com>
Removed merge conflict artifacts.

Signed-off-by: Hollie Teal <hollie@docker.com>
Updated AUTHORS file

Docker-DCO-1.1-Signed-off-by: Andy Rothfusz <github@developersupport.net> (github: metalivedev)
registry.Registry -> registry.Session

renaming this struct to more clearly be session, as that is what it
handles.

Splitting out files for easier readability.

Signed-off-by: Vincent Batts <vbatts@redhat.com>
Add Self func to reexec pkg to return the current binary path

Signed-off-by: Michael Crosby <michael@docker.com>
Move userland proxies out of daemon's process

This PR moves the userland proxies for TCP and UDP traffic out of the
main docker daemon's process ( from goroutines per proxy ) to be a
separate reexec of the docker binary.  This reduces the cpu and memory
needed by the daemon and if the proxy processes crash for some reason
the daemon is unaffected.  This also displays in the standard process
tree so that a user can clearly see if there is a userland proxy that is
bound to a certain ip and port.

```bash
CONTAINER ID        IMAGE                       COMMAND             CREATED             STATUS              PORTS                                          NAMES
5d349506feb6        busybox:buildroot-2014.02   "sh"                13 minutes ago      Up 1 seconds        0.0.0.0:49153->81/tcp, 0.0.0.0:49154->90/tcp   hungry_pike
root@1cbfdcedc5a7:/go/src/github.com/docker/docker# ps aux
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root         1  0.0  0.1  18168  3100 ?        Ss   21:09   0:00 bash
root      8328  0.7  0.6 329072 13420 ?        Sl   22:03   0:00 docker -d -s vfs
root      8373  1.0  0.5 196500 10548 ?        Sl   22:03   0:00 userland-proxy -proto tcp -host-ip 0.0.0.0 -host-port 49153 -container-ip 10.0.0.2 -container-port 81
root      8382  1.0  0.5 270232 10576 ?        Sl   22:03   0:00 userland-proxy -proto tcp -host-ip 0.0.0.0 -host-port 49154 -container-ip 10.0.0.2 -container-port 90
root      8385  1.2  0.0   3168   184 pts/0    Ss+  22:03   0:00 sh
root      8408  0.0  0.1  15568  2112 ?        R+   22:03   0:00 ps aux
```

This also helps us to cleanly cleanup the proxy processes by stopping
these commands instead of trying to terminate a goroutine.

Signed-off-by: Michael Crosby <michael@docker.com>
Move daemonconfig into daemon

Signed-off-by: Solomon Hykes <solomon@docker.com>
opts.IpOpt: a helper to parse IP addressed from the command line

Signed-off-by: Solomon Hykes <solomon@docker.com>
Exit after receiving SIGTERM

Signed-off-by: Michael Crosby <michael@docker.com>
Merge pull request #7568 from crosbymichael/replace-7240

Exit after receiving SIGTERM
Helpers to parse lists, IPs, hosts, dns searches from the command line

Signed-off-by: Solomon Hykes <solomon@docker.com>
Parse daemon configuration in daemon.Config.InstallFlags instead of main

Signed-off-by: Solomon Hykes <solomon@docker.com>
opts.IPVal returns an error on incorrect input

Signed-off-by: Solomon Hykes <solomon@docker.com>
Check for conflicting daemon config options in NewDaemon

Signed-off-by: Solomon Hykes <solomon@docker.com>
Move remote API config out of daemon/

Signed-off-by: Solomon Hykes <solomon@docker.com>
Fix inconsistency in IP address parsing errors

Signed-off-by: Solomon Hykes <solomon@docker.com>