+ NPLib
      - Add TParisPhysics.{h,cxx} class 
      - Add Paris.{h,cxx} class 

   + NPSimulation
      - Add Cluster class for Paris
      - Add Shields classes for Paris
      - Add scorers
      - Add reaction chamber class (Chamber.{hh,cc})

   + NPAnalysis
      - Add framework for analysings the results of the G4 simulation

   + Inputs
      - Add a lot of different Paris geometrical files