rename the vtkADIOSReader in readers.xml to be consistent with vtkADIOSWriter
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
In Python the instantiation method for the vtkADIOSWriter is ADIOSWriter() but for the vtkADIOSReader it is VTKADIOSReader. Change it to ADIOSReader() to be consistent.