Added additional container information to "docker info".

Instead of just showing the number of containers this patch will
show the number of running, paused and stopped containers as well.

Signed-off-by: Kim Eik <kim@heldig.org>
(cherry picked from commit a9804ab1cb117a132cbf460067d55f5146d50956)

docs/reference/commandline/info.md

@@ -21,6 +21,9 @@ For example:
 
     $ docker -D info
     Containers: 14
+     Running: 3
+     Paused: 1
+     Stopped: 10
     Images: 52
     Server Version: 1.9.0
     Storage Driver: aufs

man/docker-info.1.md

@@ -32,6 +32,9 @@ Here is a sample output:
 
     # docker info
     Containers: 14
+     Running: 3
+     Paused: 1
+     Stopped: 10
     Images: 52
     Server Version: 1.9.0
     Storage Driver: aufs