test file and a script for test runs
amend .gitignore for testrun
slight fixes in program usage options outputs, as well as some typos
reintroduce the Boost.Random-based implementation (now adapted for Boost 1.55) for randomPointOnSurface() as an altertive to consider to change back to later. The hand-made code was probably introduced in favor of the Boost-based one as it didn't compile with modern Boost versions in its old form?