Use lsb_release instead of /etc/issue and add debian as OS#50

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5nafu wants to merge 2 commits intocowboy:masterfrom

5nafu:lsb_release

Commits on Jul 11, 2015

Use lsb_release instead of /etc/issue and add debian as OS
5nafu
committed
there is no lsb_release on osx, therefor we need to check for this first. Prevents messegaes on stdout/stderr on osx
5nafu
committed