smarter file input
Merge branch 'master' of github.com:pcbend/GRSISort
utility makefilegit add util/makefile !
Merge pull request #79 from r3dunlop/master

added utility compilation to makefile
TNucleus and TKinematics constructors for stability [S.C]
Merge branch 'master' of github.com:pcbend/GRSISort
modified hit building in TSharc (charge difference -front to back)
Test.cxx contains skeleton for tgrsistransition
srim stuff
Merge branch 'master' of github.com:pcbend/GRSISort
Updated comments in TNucleus and TKinematics after pulling from Peter's repo due to conflicts.