[PATCH] docs: Document the various management commands available

[Stephen Finucane]

On Tue, 2017-05-30 at 16:15 +0100, Stephen Finucane wrote:
> As requested.
> 
> Signed-off-by: Stephen Finucane <stephen at that.guru>
> Reported-by: Thomas Monjalon <thomas.monjalon at 6wind.com>
> Closes-bug: #77

As a docs patch, I'm going to go right ahead and merge this.

Stephen