BIND 10 #1302: add bindctl configuration examples to guide

[BIND 10 Development]

#1302: add bindctl configuration examples to guide
-------------------------------------+-------------------------------------
            Reporter:  jreed         |                        Owner:
                Type:  defect        |                       Status:  new
            Priority:  major         |                    Milestone:  New
           Component:                |  Tasks
  documentation                      |                     Keywords:
           Sensitive:  0             |              Defect Severity:  N/A
         Sub-Project:  Core          |  Feature Depending on Ticket:
Estimated Difficulty:  0             |          Add Hours to Ticket:  0
         Total Hours:  0             |                    Internal?:  0
-------------------------------------+-------------------------------------
 The README previously had usage examples of using bindctl with "config".

 Put these into the guide.

-- 
Ticket URL: <http://bind10.isc.org/ticket/1302>
BIND 10 Development <http://bind10.isc.org>
BIND 10 Development