message: Add the --cent option
diff: @@ -33,7 +33,7 @@ public:
  fOptions.Add("copy", "LIST", "',' separated list to copy","cent");
  fOptions.Add("mc-tracks", "Enable MC track filter", false);
  fOptions.Add("tpc-ep", "Use TPC event plane");
  -
  + fOptions.Add("cent", "Use centrality");
  // SPD tracklet options
  fOptions.Add("max-delta", "X","Cut on weighted distance",25.);
  fOptions.Add("scale-dtheta", "Scale dTheta" , true);
  