+ geant4 files are kept in the include and src directories
   + one directory is created for each detector. This directory
     contains the associated headers and sources files
   + a script directory is created with some scripts allowing the
     conditional compilation

 * Add #ifdef statements in DetectorConstruction.cc file
   + this applies to each detector header

 * Move G4MultiFunctionnalDetector.hh header from Sharc.cc to 
   Sharc.hh

 - Put 2009-2013 copyright date
 - Change the place of the ifndef position to avoid multiple inclusion of comment line

 - Suppress all Tab
 - Arrange indentation

* Clean GaspardTrackerTrapezoidi.cc and GaspardTrackerAnnular.cc code
   + remove dummy code for aluminium dead layer
   + adapt variable names for gaspard detecor

* ParisPhoswich: remove compilation warning

   + 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 

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   - indexes are now defined with a map in GaspardTrackerModule.{h,cxx}
   - this removes warnings at compilation time

  directly from the namespace of each class.

* Documentation file (empty for the moment) for the Gaspard project is 
  added