Added missing documentation for PR #8543

Added more examples and functionalities for docker ps documentation

Signed-off-by: André Martins <martins@noironetworks.com>

docs/man/docker-ps.1.md

@@ -1,6 +1,6 @@
 % DOCKER(1) Docker User Manuals
 % Docker Community
-% JUNE 2014
+% FEBRUARY 2015
 # NAME
 docker-ps - List containers
 
@@ -37,6 +37,8 @@ the running containers.
    Provide filter values. Valid filters:
                           exited=<int> - containers with exit code of <int>
                           status=(restarting|running|paused|exited)
+                          name=<string> - container's name
+                          id=<ID> - container's ID
 
 **-l**, **--latest**=*true*|*false*
    Show only the latest created container, include non-running ones. The default is *false*.
@@ -74,9 +76,15 @@ the running containers.
     c1d3b0166030
     41d50ecd2f57
 
+# Display only IDs of all containers that have the name `determined_torvalds`
+
+    # docker ps -a -q --filter=name=determined_torvalds
+    c1d3b0166030
+
 # HISTORY
 April 2014, Originally compiled by William Henry (whenry at redhat dot com)
 based on docker.com source material and internal work.
 June 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>
 August 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>
 November 2014, updated by Sven Dowideit <SvenDowideit@home.org.au>
+February 2015, updated by André Martins <martins@noironetworks.com>