Fix: Static `ColVis.fnRebuild` method didn't work if you passed in a DataTables API instance (i.e. `$().DataTable()`)
Fix: Static `ColVis.fnRebuild` method didn't work if you passed in a DataTables API instance (i.e. `$().DataTable()`)

This fixes #36

DataTables/ColVis,modulexcite/ColVis,DataTables/ColVis,modulexcite/ColVis