Added fnUpdatePagingInfo to DataTables.models.oSettings

You mentioned in an issue I filed under the Plugins repo that you were planning on moving the fnPagingInfo plug-in into the core API: https://github.com/DataTables/Plugins/issues/12#issuecomment-16488722

Let me know if this is not what you meant.

Edit: Sorry about all the blank line additions/deletions. I'm still getting used to Vim D: