Make RangeIntGenerator Thread Safe
(otherwise it would sometimes give some numbers multipletimes)
Merge pull request #55 from Niklas974/filewriter

Filewriter
Change HashUtil to throw exception instead of system.out'ing it, so it
can be properly logged by higher classes
Implement hashCheck for filewriter. The file put on the storage will be
extended by the hash. It is compatible with the hash the writer ander
reader are using.
Fix author
add debugging enviornment
add debugging enviornment
fix issue 60
Merge pull request #61 from intel-cloud/FIX_ISSUE_60

fix issue 60
add configuration sample to demostrate how to do integrity check
Merge pull request #54 from Niklas974/rangeIntgen_thread_safe

Make RangeIntGenerator Thread Safe
Merge remote-tracking branch 'upstream/master'