FlavourSys/bash-installer-framework — pull request #2 by mikedfunk (2014-01-18 21:40:28+00:00)
Title: Update install.sh

`sed --version` and `date --version` do not work on OSX. Instead i used [this method](http://stackoverflow.com/questions/592620/how-to-check-if-a-program-exists-from-a-bash-script/677212#677212) to determine if these tools were installed.