[Dbus-cxx-users] New quick start guide on dbus-cxx-xml2cpp

[Rick L. V. Jr. <rvi...@cs...>]

I added a quick start guide to dbus-cxx-xml2cpp and cleaned up the doxygen
generated output for the previous quick start guide.

I also added a small section on using pkgconfig as well as the
ax_dbus_cxx_xml2cpp.m4 macro.

It's available on the dbus-cxx website at sourceforge and will also be in
the docs when the next dbus-cxx release happens.

-- 

Rick