New: ColReorder should now be accessed through `$.fn.dataTable.ColReorder`

- All DataTables first class plug-ins should attach to $.fn.dataTable
  rather than leaking into the global namespace now. This is the change
  needed to ColReorder. All references in the documentation and examples
  updated, but the window.ColReorder variable remains in this version
  for backwards compaitbility. Will be removed in 1.2.