[PATCH v2 6/6] docs: Add basic API guide

[Finucane, Stephen]

> Because it is now possible to access the auto-generated XML-RPC
> documentation, only provide a brief "HOWTO" on using the 'xmlrpclib'
> library and a note on how to find this autogenerated documentation.
> 
> Signed-off-by: Stephen Finucane <stephen.finucane at intel.com>
> 
> --
> 
> v2:
> - Fix bug in sample 'xmlrpclib' code
> - Improve quality of links
> - Minor rewording

Merged.