added a git test directory, and a simple git test for cbern
Merge pull request #3 from cbernet/colin_test

added a git test directory, and a simple git test for cbern
added Simulation package
Merge pull request #4 from cbernet/simulation

added Simulation package
added dummy text file for git test
Merge pull request #5 from cbernet/git_test

added dummy text file for git test
getEvent now returns a const HepMC::GenEvent
added an HepMCConverter. Will later produce EDM GenParticles.