* committed prototype

* Adding README.md file for GithHub page

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EnergyLoss instance in NPA/must2/Analysis.h changed to BeamTargetCD2 to be more
general

 - Some old machine requiered the -e flag in front of echo to interpret correctly the \t command as a tab
- some new machine ignore -e and the make fail later
- The solution to both is to suppress the -e flag (done before) and replace \t by the ascii code \011

  in NPSimulation/Tigress

* Change CLHEP unit system for NPSystemUnit in NPAnalysis
  for W1 detector

- Sin theta was not applied to the cross section

 - In the case of multiinteraction in the same volume, the scorer was keeping only the last energy deposit, instead of summing them
 - The threshold has been move in the Read sensitive and is no longer in the scorer, as the energy deposit can be down in multiple step each of them below threshold and be ignored if the threshold is applyed individually.

* Fixing GeometricalEfficiency.C macro to fit new TInitialCondition
* Adding support for TInitialCondition in Sharc

 - The DetectorThickness token has no effect

 - Beam was creating a never used Initial Condition
 - The hollow branch appear only on Linux(?) computer...

 - The target was not created and thus the Material not register in the dE/dx table. So NPS crash when trying to write the table. The table is no longer written if the size of the target is 0

* Fixing issue when EventGeneratorIsotropic is used for gamma emission

 - NPS was giving conflict between NP system of Unit and CLHEP one, this is was fixed by a nested ifdef on HEP_SYSTEM_OF_UNIT

* Fixing issue with S1:
 - in Detector Manager a tipo was desabling the condition compilation of S1

* Fixing issue in Isotropic:
 - conflict when the particle was light nuclei given by its name (eg proton instead of 1H)
 - Problem is fixed and user can use gamma, proton, deuton, triton and alpha spelling

 - Tree was not declared in non proof mode

 - The analysis project is in pMakePhysicalTree
 - The macro is launch putting the usual NPTool option in the macro string argument
 - Parrallel computation and merging of the output tree in memory (not suitable for very large run...)
 - Some change in the ROOTOuput to fit the requierement of pROOF, using the NPTOptionManager option --proof to activate them

 - The NPA project where not changed to include the new file and keep old ref to CLHEP path

   + this allows to remove CLHEP dependency in NPLib
   + this allows to remove Constant.h file

   directly from the command line

   default initialization of min, max, xmin, xmax to 0

 * Update Speg analysis so the event generator is 
   taken directly from the command line

 * Add Speg and EXL to NPAnalysis

  environment variables.

* The $NPTOOL env. variable is now the only one to be defined for
  running the project.

* Add comments in the $NPTOOL/NPLib/liblist file to specify that
  this file is created automatically.

* renaming Must2Scorer to MUST2Scorer in NPS

 - MakeFriendTrees("RunToRead1","RunToRead2")
 - can be called within CINT

 - Now Detector have two method to initialize the root input, one for the Raw data and one for physical data
 - An option ca be given in NPA to specified the input is of physical type

* Identify and correct some bug on the SSSD

 - project contain macro for thickness correction for SSSD used with Must2