Updating the manual with changes to pvtu2vtu
Updating the manual with changes to pvtu2vtu

rjferrier/fluidity,jjo31/ATHAM-Fluidity,jrper/fluidity,rjferrier/fluidity,jrper/fluidity,jjo31/ATHAM-Fluidity,iakovos-panourgias/fluidity,jjo31/ATHAM-Fluidity,rjferrier/fluidity,jjo31/ATHAM-Fluidity,iakovos-panourgias/fluidity,iakovos-panourgias/fluidity,jjo31/ATHAM-Fluidity,jrper/fluidity,rjferrier/fluidity,iakovos-panourgias/fluidity,iakovos-panourgias/fluidity,jrper/fluidity,rjferrier/fluidity,jrper/fluidity